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A body is travelling with a speed of – 20 meter per second. is it speed or velocity? Why? |
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Answer» Answer: Initial VELOCITY =20j Final velcoity v =15i time t=50s Hence ACCELERATION is a = t v − u
⟹ a = 50 15i−20j
⟹a= 50 15 2 +20 2
= 50 25
⟹a=0.5m/s 2
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