Question

A force acts for 2seconds on a body of mass 2kg initially at rest. Just after the

force stops to act the body moves 10m in the next 2seconds .Find the magnitude of
the force.
​

Answer 1

Using second equation of motion we can find the acceleration

⇒s=ut+

2

1

at

2

⇒5=0(5)+

2

1

a5

2

⇒a=

5

2

m/s

2

And hence, F=ma=

5

2

×10=4N