Question

An object that is accelerating may be (choose all that apply)

a
not moving.
b
changing direction.
c
slowing down.
d
traveling at a constant speed
e
gaining speed.

Answer 1

An object that is accelerating may be:

- **a** not moving.
- **b** changing direction.
- **c** slowing down.
- **e** gaining speed.

### Explanation:
- **a**: An object can be accelerating (e.g., in free fall) even if it starts from rest, so it can have an acceleration while not having a velocity.
- **b**: Acceleration includes changes in direction, so an object can be accelerating while changing its direction even if its speed remains constant.
- **c**: An object can accelerate negative velocity (decelerate), which means it is slowing down.
- **e**: Gaining speed is also a form of acceleration.

**d** (traveling at a constant speed) is incorrect because if an object is moving at a constant speed, its acceleration is zero.