Question

a ball is moving in a circle at fixed speed which statement is true
no acceleration present
only force act
acceleration present but constant magnitude
acceleration present and act like tangent to circle ​

Answer 1

Answer:

true

yes it is true and is called circular motion

Answer 2

Acceleration present but constant magnitude is true when ball is moving in a circle with fixed speed.

What happens in circular motion?

• A body is said to be moving in circular motion when it moves about a fixed length.
• The direction of motion of the ball changes at every point.
• When speed is constant, the magnitude of velocity is constant but there is change in direction of velocity.
• Since there is change in direction of motion, an acceleration is introduced and the direction of the acceleration is towards the centre of circular motion.
• The magnitude of acceleration remains constant because the speed is constant.