Arubber ball with a mass of 0.1 kg is thrown straight u; with a speed of 20. m/s.

what is the height at which the ball travels?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Could we see a galaxy that is 20 billion light-years away?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.