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Work, Power And Energy
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05/11/2021 10:37 am
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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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05/11/2021 10:39 am
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 = \(\frac{1}{2}\) mv2 = 400 J