Value: 1 What is the braking force needed to bring a1500kg car going
15m/s to a stop in 4s?

What is the momentum of an 8kg bowling ball rolling at 2m/s?

Value: 1
A bowling ball (8kg) moving at 2m/s rolls into a pillow and comes
to a stop in 0.5s. With what force did the bowling ball hit the
pillow?

Value: 1
A bowling ball (8kg) moving at 2m/s hits a wall and stops in
0.01s. With what force does the bowling ball hit the wall?

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

The statement that best describes the object on the right is a bar magnet with its north pole on the left.