Question

how acceleration change​

Answer 1

Answer: option d is correct

Explanation: because in uniform circular motion the direction of the particle continuously changes and since we know that velocity and acceleration are vector quantities therefore they also depends on direction therefore both velocity and acceleration changes but their magnitude remains constant

Answer 2

Answer:

The acceleration is changed when apply a force to the object.

Explanation:

When an object is in motion, the acceleration does not change till a force is acted on it. The acceleration can be either negative or positive. When the acceleration occurs in the direction of the motion, then the acceleration is taken to be positive and the velocity increases. When the acceleration occurs opposite to the direction of motion, then the acceleration is taken to be negative and the velocity decreases. This decrement of velocity is also known as deceleration.