Question

a body of mass 100 kg is allowed to full freely under the action of gravity . Calculate the KE after 10 sec​

Answer 1

Answer:

Given,

Initial velocity, u=0

Time, t=4sec

Apply equation of kinematic.

V=u+gt

V=0+10×4=40ms

−1

Kinetic energy,K.E=

2

1

mV

2

=

2

1

×0.1×40

2

=80J

Hence, kinetic energy is 80J

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