Question

A body is traveling at a constant speed in a circle. It has

• A. constant velocity
• B. it is not accelerated
• C. an inward radial acceleration
• D. an outward radial acceleration

Answer 1

The correct option is C

an inward radial acceleration

Explanation of correct option

c) An inward radial acceleration:

1. When a body moves in a circular motion the direction of velocity continuously changes.
2. So, the body gets accelerated.
3. the direction of acceleration is towards the center of the circle- which is known as inward radial acceleration.

Explanation of incorrect options

a) Constant velocity:

1. The body is traveling at a constant speed in a circle.
2. when a body moves in a circular motion even though the speed is constant, its velocity changes.
3. Because the direction of motion continuously changes when objects move in a circle.
4. So, the velocity will not be constant.

b) It is not accelerated :

1. Acceleration is defined as the rate of change of velocity with time.
2. Since velocity is not constant, the value of acceleration is Non-Zero.
3. Hence the body gets accelerated.

d) An outward radial acceleration

1. The direction of acceleration is toward the center of the circle.
2. So, the body does not have outward radial acceleration.

Hence, Option ( c ) is correct.