Question

In which situation is an object accelerating? A. A car is parked on the side of the street. B. A bicycle travels at a constant velocity down the street. C. A rock's velocity increases from 5 m/s to 10 m/s as it falls down a cliff. D. The velocity of a paper airplane is 2 m/s. Four seconds later, the velocity is still 2 m/s.

Answer 1

A is the full answer to your question

Answer 2

C would be the correct option because acceleration is the increase of amount or extent.