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Question

A scooter travelling at 10  m/s speed up to 20  m/s in 4  sec. Find the average acceleration of scooter.
  1. 2 m/s2
  2. 4 m/s2
  3. 5 m/s2
  4. 2.5 m/s2


Solution

The correct option is D 2.5 m/s2
Acceleration of the train is given by
a=ΔvΔt
Here, Δv=(2010)=10 m/s
and Δt=4 s
 a=104=2.5 m/s2

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