ICSE Class 10 Answered
A force is applied on a body of mass 20kg moving with a velocity of 40m/S .The body attains a velocity of 50 m/s in 2s.calculate the work done by the body.
Asked by Mail.nehasharmaa | 19 Feb, 2019, 10:13: AM
Expert Answer
Using work energy theorem
Work done by force = change in kinetic energy
W = 1/2mv^2- 1/2mu^2
W= 1/2×20(50^2-40^2)
W = 10×(2500-1600)
W = 10×900= 9000 Joules
Answered by Ankit K | 19 Feb, 2019, 10:48: PM
ICSE 10 - Physics
Asked by Mail.nehasharmaa | 19 Feb, 2019, 10:13: AM
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