law of gravity. first law of motion. second law of motion. third law of motion.
I gave my students this multiple choice question: A ball on a cart is moving at a rate of 2 m/s. The cart suddenly stops and the ball continues to travel in the same direction at the same speed. This is an example of the

Only one answer is correct among these 4 choices:
- law of gravity.
- first law of motion.
- second law of motion.
- third law of motion.

Could you tell me which one is correct?

first law of motion.