A cart of mass starts from rest on a smooth horizontal track

PHYSICS · Single correct · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line

Problem

A cart of mass

3\,\text{kg}

starts from rest on a smooth horizontal track. A constant force

F

acts on it for

4\,\text{s}

, after which the force is removed. The cart then continues with the speed it has gained for another

6\,\text{s}

. The total distance covered in the entire

10\,\text{s}

30\,\text{m}

. What is the magnitude of the force

F

? (a)

1.8\,\text{N}

(b)

4.5\,\text{N}

(c)

2.8\,\text{N}

(d)

5.6\,\text{N}