Calculate the acceleration of a body which starts from rest and travels 87.5 metres in 5 seconds ?
Calculate the acceleration of a body which starts from rest and travels 87.5 metres in 5 seconds ?
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u=0
s=87.5 metres
t=5 sec
∴s=ut+1/2*at²
⇒87.5=1/2*a*25
⇒a=7m/sec²
S = ut + 0.5at²
a = 2S / t² ……[∵ u = 0]
= (2 × 87.5 m) / (5 s)²
= 7 m/s²
∴ Acceleration of body is 7 m/s²