a player passes a basketball to another player who catches it at the same level from which it was thrown. the initial speed of the ball is 7.1m/s and it travels a distance of 4.6m. What were (a) the initial direction of the ball and (b) it's time of flight?
The basketball is thrown horizontally and the time of flight is approximately 0.648 seconds.
Explanation:In this problem, a basketball is passed from one player to another at the same level. The initial speed of the ball is 7.1 m/s and it travels a distance of 4.6 m. To determine the initial direction of the ball, we need to consider that the ball is caught at the same level from which it was thrown, meaning it has no vertical displacement. Therefore, the initial direction of the ball is horizontal.
To find the time of flight, we can use the equation:
time = distance / speed
Plugging in the values given:
time = 4.6 m / 7.1 m/s = 0.648 s
So, the time of flight of the ball is approximately 0.648 seconds.
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A truck accelerates at 5m/s2. Find the truck's mass if the driver applies a force of 425N(can you also show free diagram)?
Two objects of the same mass are in a room. At which of the following distances will the greatest gravitational force be exerted by one object on another?
2 m
4 m
6 m
8 m
Answer:
2 m
Explanation:
Because there will be the greatest amount of force when they are closest together.
The distance at which the greatest gravitational force is exerted by one object on another if Two objects of the same mass are in a room should have the shortest distance, so option A is correct.
What is the gravitation force?The universal force of attraction operating on all matter is known as gravity, usually spelled gravitation, in mechanics. The weakest known force in nature, it is by far and does not influence how everyday matter's internal properties are determined.
Measurements of gravity around the Earth, other planets, and the Moon, as well as experiments on the nature of gravitation, have greatly improved as a result of the launch of spacecraft and the research that has resulted from it.
The formula for the gravitational force is inversely proportional to the square of the distance between two objects,
Thus, to get the maximum gravitational force, the mass is to be at the lowest separation.
Therefore, the distance at which the greatest gravitational force be exerted by one object on another if Two objects of the same mass are in a room should have the shortest distance.
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which factor has the least impact on the potential energy or kinetic energy of an object
a continental-continental plate collision causes what to form
IM LITERALLY CRYING CUZ I DONT KNOWTHIS AND IM SO FUSTRATED SO PLZ HELP I BEG OF U
On Earth, Yancy hits a golf ball as hard as he can. The golf ball flies 150 meters before hitting the ground. About how far would the golf ball fly if Yancy hit it on the surface of Mercury with exactly the same amount of force and in the same direction?
(Ignore the air resistance on both planets.)
A.
less than 150 meters
B.
more than 150 meters
C.
150 meters
D.
150 yards
Answer:
B.
more than 150 meters
Explanation:
As we know that the range of projectile motion on the surface of earth is given by the formula
[tex]R = \frac{v^2sin(2\theta)}{g}[/tex]
so here on the surface of earth the gravity is given as g = 9.8 m/s/s
now if the golf ball is hit on the surface of earth then it range is given as R = 150 m
while if we hit the ball at surface of mercury then on the surface of mercury the gravity will be g = 3.7 m/s/s
so due to decrease in the magnitude of gravity the range on the surface of mercury will be more than 150 m
Answer:
B. More that 150 meters.
Explanation:
:)
an object falls from a high building and hits the ground in 9.0 seconds. ignoring air resistance, what is the distance that it fell
The object fell a distance of 396.9 meters before hitting the ground.
To calculate the distance an object falls in a given time ignoring air resistance, we use the formula for the distance covered under constant acceleration: d = rac{1}{2} g t^2, where d is the distance, g is the acceleration due to gravity (
9.8 m/s2), and t is the time in seconds. Substituting the given time of 9.0 seconds into the equation, the distance is calculated as d = rac{1}{2} imes 9.8 imes 9.0^2, which equals 396.9 meters. This equation is derived from basic kinematic principles that govern the motion of objects in free fall, assuming gravity is the only force acting on the object.
Emily sprains her ankle on her way home from school. Her mom suggests she use an “instant cold pack” to reduce the swelling. When Emily’s mom hands her the cold pack, it is room temperature. The instructions on the pack tell Emily to pop a button inside the ice pack to open a packet of chemicals. Once Emily has popped the button, she notices that the cold pack immediately gets cold. She places it on her swollen ankle. Write a thoughtful and complete response (3+ sentences) that describes what happened to the energy as it is first in the cold pack (before Emily pops the button), then when she pushes the button, and then after Emily has placed the cold pack on her ankle. Discuss transfers and transformations of the energy.
An object is dropped from a platform 100 feet high. Ignoring wind resistance, what will its speed be when it reaches the ground?
Please explain.
_____ ft/s
6400
2000
80.
44
Answer:
80 ft/s
Explanation:
Use III equation of motion
V^2 = U^2 + 2g h
Here, U = 0, g = 32 ft/s^2, h = 100 ft
V^2 = 0 + 2 × 32 ×100
V^2 = 6400
V = 80 ft/s
Select all that apply. The three types of rock in the Earth's crust are _____.
igneous
basalt
limestone
granite
metamorphic
sedimentary
Final answer:
The Earth's crust is composed of igneous, metamorphic, and sedimentary rocks, examples of which include granite (igneous), basalt (igneous), and limestone (sedimentary).
Explanation:
The three types of rock in the Earth's crust are igneous, metamorphic, and sedimentary. Igneous rocks, like granite and basalt, form when magma or lava cools and solidifies. Sedimentary rocks form from the compaction and cementation of various substances, including pre-existing rock fragments or mineral precipitation. Limestone is an example of a sedimentary rock formed from precipitated minerals. Metamorphic rocks arise from the transformation of existing rock types through heat and pressure, resulting in a change in mineral composition or structure.
How are galaxies organized and distributed within the universe
Answer:
The answer is: Many are associated in pairs, trios, groups or clusters, and their distribution in filamentary structures.
Explanation:
Galaxies rarely appear isolated and their distribution in the Universe is not uniform. Many are associated in pairs, trios, groups of some tens or clusters of up to a few thousand. These groups are held together by gravitation.
The large-scale distribution of galaxies seems to indicate that they are concentrated along large filamentary structures.
The answer is: Many are associated in pairs, trios, groups or clusters, and their distribution in filamentary structures.
A dog is sniffing around for a bone. He walks 3.6 m east and 6.0 m north. What are the magnitude and direction of the dog from his original position?
carbon burns with oxygen to produce carbon dioxide gas. which of these shows the correct chemical reaction?
A. C + O = CO2
B. C + O2 ------> CO2
C. C, O, CO2
D. CO2 = C + O
Answer:
B. C + O2 ------> CO2
Explanation:
i took the test
Scientific experiments are specially designed to test explanations for an observed phenomenon. A student decides to conduct an experiment to determine the effect that the amount of time spent in the sunlight has on the overall growth of a plant. The student will conduct the experiment using two identical plants that will only spend different amounts of time in the sunlight. All other aspects needed for growth will remain identical for each. In the experiment described, what would the amount of water given to each plant be considered? a. an observation b. a dependent variable c. an independent variable d. a control or constant
Answer:
D. a control or constant
Explanation:
Just took it
The amount of water given to each plant would be considered an independent variable. Therefore option C is correct.
An independent variable is a factor that the researcher deliberately manipulates or changes in an experiment to observe its effect on the dependent variable.
In this case, the independent variable is the amount of time spent in the sunlight. The researcher intentionally varies the exposure to sunlight between the two plants.
Therefore, the amount of water given to each plant is a control or constant, while the amount of time spent in the sunlight is the independent variable in this experiment.
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If you opened the valve on a bicycle tire, what would happen to the air inside of the tire? Why do you think that would happen. I need a full explanation in the science version.
If you opened the valve on a bicycle tire, the air inside of the tire will come out and the pressure it exert will be less.
Why does the air filled in a bicycle to keep it tight?When air is pumped into a bicycle tube, the tube gets inflated due to the air pressure exerted by the collisions of gas molecules in air with the inner walls of the rubber tube. This air pressure makes the tyres feel hard.
What causes air pressure to decrease in tires?When the temperature cools down, the air within the tire shrinks. In the same way, when the temperature rises, the air within the tire expands.
Due to the air being compressed in a small space, the air is pressurized and when the valve is open it causes a loss in pressure making the air gush out.
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What does the force diagram look like for a book at rest on a desk?
When analyzing the results of a scientific experiment, Kevin should base his conclusion on
Answer:
the empirical evidence that is collected during experiment.
Explanation:
When analyzing the result of any scientific experiment, we should base our conclusion on the evidences during process of the experiment. Because conclusion of any experiment describe the important things we noticed during experiment and all such steps are combined and give us the result of experiment. so Kevin should base his conclusion on the empirical evidences during experiment.
What makes silver and gold different by using the terms atom and element
The difference between silver and gold is that they are different elements with different atoms.
An atom is the smallest unit of matter that retains all the properties of an element. Gold atoms cannot be broken down into anything smaller while still retaining the properties of gold.
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Gold atoms cannot be broken down into anything smaller while still retaining the properties of gold. Gold is classified as an element, which means it is a substance composed of only one type of atom.
Explain one way the water cycle affects climate. Use 3-4 Sentences to explain. (Complete sentences)
Answer:
The water cycle will affect the climate by causing rain and snow.
Explanation:
if temperatures increase more rainfall will occur because more water evaporates in the air.
If the amplitude of the resultant wave is twice as great as the amplitude of either component wave, and this wave exhibits reinforcement, the component waves must
A. have a different frequency than the resultant wave.
B. be in phase with each other.
C. be traveling in the opposite direction of the resultant wave.
D. have a different wavelength than the resultant wave.
Answer: B-be in phase with each other
If the amplitude of the resultant wave is twice as great as the amplitude of either component wave, and if this wave exhibits reinforcement, the component waves must be in phase with each other.e
The fastest speed in the universe is the ____________ _____ ______________.
The Solar System is made up of eight planets, numerous comets, asteroids, and moons, and the Sun. The force that holds all of these objects together is _______.
A.
magnetism
B.
tension
C.
electromagnetic attraction
D.
gravity
the force is gravity holding them
Why is it more important to monitor your word choice in a professional environment
which is an element A. titanium and carbon in an alloy B. oxygen and nitrogen joined together C. a water molecule D. a piece of pure nickel
ps its science
What is the unit of measure for density?
Answer:
g/cm^3
Explanation:
grams is the unit of mass and cm cubed is the unit of volume.
the equation for density is mass over volume (d=m/v)
During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total mass of the black residue formed was 79.6 g. Does the law of conservation of mass hold true in this case?
Answer:
When copper carbonate is heated, it decomposes to form a black residue. This black residue is actually copper(II) oxide. Along with this black residue, carbon-dioxide is released.
The law of conservation of mass holds true. 123.6 g of copper carbonate decomposes to 79.6 g of copper oxide and (123.6 g-79.6 g=44 g) 44 g of carbon-dioxide.
explain why a fast moving freight train cannot be stopped quickly
how is interia related to Newton's first law of motion
Final answer:
Inertia is the property of an object to maintain its state of motion or rest unless acted upon by a net external force, as described by Newton's first law of motion. This law, also known as the law of inertia, indicates that an object will continue in its state of constant velocity unless a force causes a change.
Explanation:
How is Inertia Related to Newton's First Law of Motion?:
Inertia is directly related to Newton's first law of motion, often referred to as the law of inertia. Newton's first law states that a body at rest remains at rest, and a body in motion remains in motion at a constant velocity unless acted upon by a net external force. This tendency of an object to resist changes in its state of motion or rest is known as inertia. Essentially, inertia is the reason why an object remains at rest or carries on moving at the same speed in a straight line unless a net force acts upon it.
Newton's laws are fundamental in the study of motion under the influence of forces, particularly in inertial frames of reference. Forces, which are described by Newton's laws, are always vectors with both magnitude and direction, and arise from interactions among objects. Newton's first law serves as a definition of an inertial frame of reference, and thus, any frame where the law is valid is considered inertial.
Can someone help me please
If this experiment is repeated at a place 10 kilometers above the sea-level, the acceleration due to gravity g (exp) is expected to:
a. increase.
b. decrease.
c. remain constant.
The acceleration due to gravity, or g (exp), will decrease if the experiment is conducted 10 kilometers above sea level. This is because the force of gravity reduces as you move further from the Earth's surface.
Explanation:The acceleration due to gravity, or g (exp), is expected to decrease if the experiment is repeated at a place 10 kilometers above the sea-level. This is because the force of gravity decreases as the distance from the center of the Earth increases.
Essentially, the further you move away from the Earth's surface, the weaker the gravitational force gets. This is due to the fact that gravity is dependent on distance. So, being 10 kilometers above sea level would result in a slightly lower acceleration due to gravity.
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