According to Newton s second law of motion `F =ma` where `F` is the force required to produce an acceleration a in a body of mass m If a = 0 then `F = 0` no external force is required to move a body uniformly along a straight line If a force `F` acts on a body for t seconds the effect of the force is given by Impulse =F `xx` t = change in linear momentum of the body
The retardation of the ball is .

Options

A. `1600m//s^(2)`
B. `320m//s^(2)`
C. `3200m//s^(2)`
D. `160m//s^(2)`

Answer

c

Explanation

As `F = ma :. a = (F)/(m) = (480)/(150 xx 10^(-3))~~ 3200m//s^(2)` .