Driving your boat with its engine onto a trailer can cause uncontrollable movement, potential damage, erosion of the launch area, and dangerous propeller strikes.
Explanation:There are several problems related to using your boat's engine to drive it onto a trailer. Firstly, the propellers of the boat create a turbulent water flow that will provide thrust in an uncontrolled manner, likely leading to imprecise movement and potential damage to either the boat or the trailer. Moreover, the propeller wash can cause erosion and possibly damage the launching area. Secondly, using the engine to drive onto the trailer may lead to prop strike, where the boat's propeller might come into contact with the ramp, causing significant damage to the motor.
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A car initially moving at 9 m/s begins accelerating at its maximum acceleration of 4 m/s2. if the car maintains this acceleration, how much time will it take to cover 200 m?
A constant force of f = 47i + 30j moves an object along a vector d = 13i - 8j, where units are in pounds and feet. find the work done.
Answer:
The work is 371 lb ft
Explanation:
The work can be calculated with yhe scalar product between the force and the displacement:
[tex] W = F.d [/tex]
The scalar product is obtained multiplying component to comoponent and summing the terms:
[tex] W [/tex] = <47, 30> · <13, -8> [lb ft]
[tex] W [/tex] = 47*13 + 30*(-8) [lb ft]
Finally:
W = 371 [lb ft]