A puck rests on a horizontal frictionless surface

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

0.10\,\text{kg}

puck rests on a horizontal frictionless surface. It experiences three consecutive horizontal forces: (1)

2.0\,\text{N}

east for

0.50\,\text{s}

, (2)

1.0\,\text{N}

west for

1.0\,\text{s}

, and (3)

0.75\,\text{N}

east for

0.25\,\text{s}

. What is the magnitude and direction of the puck’s velocity immediately after the third force ends? (a)

1.9\,\text{m/s}

west (b)

1.9\,\text{m/s}

east (c)

0.19\,\text{m/s}

east (d)

10\,\text{m/s}

east