Question

Calculate the work done to attain a car of velocity 30m/s having mass 100kg?​

Answer 1

Question :

Calculate the work done to attain a car of velocity 30m/s having mass 100kg?​

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Answer :

w = ½ mv²
= ½ x 100 x 30 x 30
= 45000J

Answer 2

kineric energy=1/2*m*v^2

=0.5*100*30*30

=45000

potential energy=0

taotal energy=work done=0+45000=45000