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A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?

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A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?

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Mass of body = 2 kg 

Initial velocity, u = 0 

Time taken, t = 2 s 

Acceleration due to gravity, g = 10 m/s2 

Final velocity, v = ? 

Using the first equation of motion, 

v = u + gt = 20 m/s 

KE = 1/2 mv2 = 400 J

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