An object is released from rest high above the surface of the earth. When it has fallen halfway to the surface, its kinetic energy is KE1. After it has fallen twice as far, just before it hits the surface of the earth, its kinetic energy is KE2. 1) How does KE2 compare to twice KE1

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p