Question

A ball of mass 200 g is thrown vertically upwards with a velocity of 20ms. Calculate its potential energy after 2 sec

Answer 1

Answer:

Explanation:

Given

Mass=200g=1/5kg

V=20m/s

Time=2sec

According to 2nd eqn of gravitation

H=ut+1/2gt^2=1/2×10×4=20m

PE=mgh=1/5×10×20=40j

Answer 2

Answer:

Explanation:

Given

Mass=200g=1/5kg

V=20m/s

Time=2sec

According to 2nd eqn of gravitation

H=ut+1/2gt^2=1/2×10×4=20m

PE=mgh=1/5×10×20=40j

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Answer 3

Answer:

Explanation:

Given

Mass=200g=1/5kg

V=20m/s

Time=2sec

According to 2nd eqn of gravitation

H=ut+1/2gt^2=1/2×10×4=20m

PE=mgh=1/5×10×20=40j