The force on a particle varies with time as described below:

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

The force on a particle varies with time as described below: (i)

t=0

2\,\text{ms}

: rises uniformly from

0

300\,\text{N}

(ii)

t=2\,\text{ms}

4\,\text{ms}

: constant

300\,\text{N}

(iii)

t=4\,\text{ms}

6\,\text{ms}

: decreases uniformly to

-150\,\text{N}

(iv)

t=6\,\text{ms}

8\,\text{ms}

: constant

-150\,\text{N}

(v)

t=8\,\text{ms}

10\,\text{ms}

: rises uniformly back to

0

. (a) Calculate the net impulse delivered between

t=0

and

t=10\,\text{ms}

. (b) A particle of mass

0.20\,\text{kg}

starts from rest under this force. Determine its final velocity at

t=10\,\text{ms}