WAEC - Physics (2020 - No. 29)

A motorcycle starting from rest is uniformly accelerated such that its velocity in 10s is 72kmhr\(^{-1}\). What is its acceleration?
108ms\(^2\)
86ms\(^2\)
4ms\(^2\)
2ms\(^2\)

Explanation

 

where u = o m/s, t = 10s, 

 v = 72kmhr\(^{-1}\) --->  (72 X 1000) / 3600

: v = 20 m/s

Acceleration (a) = ( v - u ) / t ---> (20 - 0) / 10 

: a = 2m/s\(^2\)

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