Q31 / 126 · NTA Abhyas (NEET) 2020 · Physics · Motion In Two Dimensions

When a particle moves in a circle with a uniform speed

A
its velocity and acceleration are both constants
B
its velocity is constant but the acceleration changes
C
its acceleration is constant but the velocity changes
Correct answer
D
its velocity and acceleration both change

Solution

Speed is constant but the direction is changing continuously hence velocity is changing.

Acceleration is acting radially inward, hence acceleration is also changing.

Hence, the correct answer is option: 'D'.

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