Physics

Problem

A ball of mass

0.2\,\text{kg}

is moving due east with a speed of

10\,\text{m/s}

. After a constant horizontal force acts on it for

0.5\,\text{s}

, the ball moves due east with a speed of

4\,\text{m/s}

. In which direction did the force act? a) Due east b) Due west c) Due north d) The force was zero