Question

A person lift a body of mass 2KG to a height of 2m from the ground. What is its P.​

Answer 1

Given:

Mass (m) = 2kg

Height (h) = 2m

Work done(P.E) = ?

Gravity(g) = 9.8 m/s

P.E = m.g.h

      = 2×2×9.8

      = 4×9.8

       = 39.2J

Hence 39.2 joules is the required potential energy

Hope it will help

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Answer 2

Answer:

p=mv

m=2kg

let v=v

s=2m

a10m/s^2

A.T.Q

V^2-u^2=2as

v^2-0 =2×10×2

v^2=40

v=2× square root 10

p= 2×2 ÷square root 10

p=4square root 10

HOPE IT IS HELPFUL