A particle of mass 100 g is thrown verti...

A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work done by the force of gravity during the time the particle goes up is:

`-0.5 J`

`-1.125 J`

`1.25 J`

0.5 J

Text Solution

Verified by Experts

The correct Answer is:

Work done by gravity = change in K.E.
`W=1/2mv^2-1/2"mu"^2`
`W=0-1/2xx(100)/(1000)xx25=-1.25 J`

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