A freight car moving at 30 m/s to the right strikes a stationary freight car of the same mass. If the two  cars couple together, what will be their velocity after the collision?

A car on a straight track is traveling at 20 m/s. If the car accelerates for 3 seconds at 5 m/s2, what will be the car's speed at the end of the acceleration?

A man getting down a running bus falls forward because...

A book is at rest on top of a table. Which of the following is correct?

Potential energy is the energy possessed by an object due to its

A mass of 3 kg moving to the right with a momentum of 12 kg-m/s would have a speed of ____ m/s.

Momentum is the product of

If two speeding trucks have the same momentum,

The unit of energy is the joule, which is equal to a

The tendency of objects to resist changes in their motion is called