Answers

2016-02-16T07:01:53+05:30
M = 500 kg
Δv  = [ 72 - 36 ] = 36 km/h ⇄ 10 m/s

Ek .......... ?

Answer
Ek = 1/2 mv²
Ek = 1/2 x 500 x 10²
Ek = 250 x 100
Ek = 25.000 Joule
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