MCQ
A body cannot have a:
- Azero speed and non-zero acceleration
- Bnon-zero speed and zero acceleration
- ✓constant velocity and a varying speed
- Dconstant speed and a varying velocity
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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