Question

A ball of mass 20g is thrown up with velocity of 10m/s .what is the work done by gravity?

Answer 1

$\huge\purple{As-Salamu-Alykum}$



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Work =?

Mass= 20g= 0.02kg

Velocity = 10m/s

W=FS ___________(1)

F=ma

a=v/t

So....

F=mv/t

Put this in eqn 1

W=mv/t × S

W=mv×s/t

s/t=v , Put this in above equation

W=mv.v

W=0.02 (10)^2

W=0.02×100

W= 2J


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$\huge\orange{INSHALLAH\;it\;will\;help\;U}$