MCQ
A body cannot have a:
- Azero speed and non-zero acceleration
- Bnon-zero speed and zero acceleration
- Cconstant velocity and a varying speed
- Dconstant speed and a varying velocity
Explanation:
Speed of body is magnitude of velocity. So if velocity is only changing direction then speed is constant.
But if speed is changing then velocity have to be varying.
When a body starts moving the incident when t=0 then it have zero velocity but some acceleration is there.
Object moving with constant velocity has zero acceleration but non zero speed.
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