D. Because as height increases, so does the potential energy.
From Newton's second law, F= ma
F = 2000 kg x 15 m/s^2 = 30000 N
Answer:
B. the force of on the truck due to the collision is exactly equal to the force on the car.
Explanation:
At the time of collision between two objects of unequal or equal masses two forces emerge at the point of collision .They are called action and reaction force . According to third law of Newton , they are equal . So in the instant case of collision between car and truck , force on both of them will be equal.
Acceleration = change in velocity/time
= 40/5
=8m/s^2
