Physics, asked by shouvikpal320, 11 months ago

certain force acting on a 20kg mass change its velocity from 5ms to 2ms .calculate the work done by the forge​

Answers

Answered by rinapatel2480pa3g2c
1

Answer:

210Joule

Explanation:

Mass = m = 20 kg

Initial velocity = u = 5 ms

Final velocity = v = 2ms

Work done  =  Kinetic energy = K= 0.5*mv^2 - 0.5*mu^2

                                                       = 0.5*m*(u^2-v^2)

                                                       =0.5*20*(5^2-2^2)

                                                       =0.5*20*(25-4)

                                                       =0.5*20*21

                                                       = 210 Joule

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