Question

A force acts on a body of mass 3 kg such that its velocity changes from 4 m $s^{-1}$ to 10 m $s^{-1}$.Calculate the change in the momentum of the body.

• A. 2 kg m $s^{-1}$
• B. 14 kg m $s^{-1}$
• C. 18 kg m $s^{-1}$
• D. 42 kg m $s^{-1}$

Answer 1

The correct option is C 18 kg m $s^{-1}$

A force acts on a body of mass 3 kg such that its velocity changes from 4 m/s to 10 m/s

change in momentum

$\Delta p=m(v_1-v_2)=3\ast (10-4)=18kgm/s$