Question

which of the following best represents newtons first law of motion?
a. a rock rolling uphill
b. a basketball bouncing higher over time
c. a soccer ball staying still until kicked

Explanation:

Newton's First Law of Motion states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Option c, a soccer ball staying still until kicked, fits this description as the ball is at rest (staying still) until a force (kicked) acts on it. Option a (a rock rolling uphill) involves a force - gravity acting on the rock as it moves uphill. Option b (a basketball bouncing higher over time) is not in line with the law as it would require an external force to make it bounce higher over time in a way that contradicts the natural behavior without an unbalanced force (in reality, a basketball would not bounce higher over time without an external input of energy).

Answer:

C. A soccer ball staying still until kicked