Aball rolls along the floor with a constant velocity of 3 m/s. how far will it have gone after 234 seconds?

How do we measure or think of speed in the united states?

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.

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.