A cart moves east at while two opposite horizontal forces of act on it

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

Problem

2.0\,\text{kg}

cart moves east at

0.50\,\text{m/s}

while two opposite horizontal forces of

5.0\,\text{N}

act on it, keeping the cart in translational equilibrium. At

t=0

the westward force is removed. What is the cart’s speed

3.0\,\text{s}

after the force is removed? (a)

3.0\,\text{m/s}

east (b)

7.5\,\text{m/s}

east (c)

8.0\,\text{m/s}

east (d)

0.50\,\text{m/s}

east