Represented by symbol; all are found on a periodic table

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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.