Question

An object with mass 100 gram is on 500 meters height Calculate the kinetic energy of that free falling object after 3 seconds .​

Answer 1

Explanation:

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