Question

A hot air balloon is rising upward with a constant speed. What can be said about the acceleration of the balloon?

1) The acceleration of the balloon is zero.
2) The acceleration of the balloon is positive.
3) The acceleration of the balloon is negative.
4) The acceleration of the balloon cannot be determined without additional information.

Answer 1

The acceleration of the balloon is zero.

Step-by-step explanation:

In the case of a hot air balloon rising upward with a constant speed, the acceleration of the balloon is zero (option 1). Acceleration is the rate of change of velocity, and because the balloon is moving at a constant speed, its velocity is not changing. Therefore, there is no acceleration.