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A car wheel 60 cm in diameter is turning...

A car wheel 60 cm in diameter is turning at 8 revolutions per seconds .When the car begins to slow uniformly to rest in a time of 14 seconds Distance travelled by the car in this time is

A

211.2 m

B

105.6 m

C

52.8 m

D

422. 4 m

Text Solution

Verified by Experts

The correct Answer is:
B
`N=(n_(1)+n_(2))/(2)xxt=4xx14=56`.
Distance covered `=Nxx2pi r =56xx2xx0.3xx(22)/(7)=105.6 m`
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