Question

A body of mass 2 kg is thrown vertically upward with an initial velocity of 20 m/s. What will
be it potential energy at the end of 2.0s take g=10m/s2
​

Answer 1

Explanation:

Given ,

Mass of body ,m=2 kg

Initial velocity u=20m/s

Height reached at t=2secs h=ut−

2

1

gt

2

⟹h=20×2−

2

1

×10×2

2

⟹h=20 m

Potential energy , P=mgh=2×10×20=400

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