In the following situations, which ball has the greatest kinetic energy? A) A golf ball rolling off the end of a ramp at 3m/s
B) A ping pong ball sitting at the top of a ramp
C) A golf ball sitting at the top of a ramp
D) A ping pong ball rolling off the end of a ramp at 3m/s

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

If the new moon happens on january 15th, what shape will it be on february 6th?

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s. when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?