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CBSE Class 9 Answered

A force is applied on acar of mass 1500 kg,so that its speed increses from 54km/h to 72km/h.find the workdone by the force on a car?
Asked by | 09 Mar, 2012, 11:50: PM
answered-by-expert Expert Answer
increase in speed=72-54=18km/h=5 m/s
work done=forcexdisplacement=can not be found here, as time not given, displ can not be found out .
Answered by | 13 Mar, 2012, 01:46: PM

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