Grade 12th passTop Engineering Colleges in IndiaAn automobile having a mass of 1,250 kg is travelling at 40 m/s. What is its kinetic energy in KJ? How much work must be done to bring it to a stop? Shazeen 9 Years agoGrade 12th pass
CHETAN KULHARA9 Years agoK.E. - 1\2*1250*40 = 25000 JWork done is same as K.E. So work done to stop this automobile is 25000 J.
Gosula Madhukar9 Years agoK.E.-1/2*1250*40*40=100000J=100KJ,which is same as the work that is to be done in order to stop that.