Calculate the kinetic energy of a 20 kg wooden cart moving with a spee – InterviewSolution

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1.	Calculate the kinetic energy of a 20 kg wooden cart moving with a speed of 5 m/s. Calculate the kinetic energy again when the speed is doubled.
Answer» Solution :`KE=1/2mv^2`, m=20 kg , v=5 m/s `KE=1/2xx20xx(5)^2` =250 J When SPEED doubles , v=10 m/s Then , `KE=1/2 xx 20 xx 10 xx 10`= 1000 J

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