# A time dependent force

Question:

A time dependent force $\mathrm{F}=6 \mathrm{t}$ acts on a particle of mass $1 \mathrm{~kg}$. If the particle starts from rest, the work done by the force during the first $1 \mathrm{sec}$. will be :

1. $9 \mathrm{~J}$

2. $18 \mathrm{~J}$

3. $4.5 \mathrm{~J}$

4. $22 \mathrm{~J}$

Correct Option: , 3

Solution: