A force `F_1` acts on a particle so as to accelerate it from rest to a velocity v. The force `F_1` is then replaced by `F_2` which decelerates it to rest

Options

A. `F_(1)` most be equal to `F_(2)`
B. `F_(1)` may be equal to `F_(2)`
C. `F_(1)` must be unequal to `F_(2)`
D. None of these

Answer

B

Explanation

`v^(2)=0+(F_(1))/(m)s_(1)`
`0=v^(2)-(F_(2))/(m)s_(2)`
`F_(1)s_(1)=F_(2)s_(2)`