Question

A force of $10 \,N$ acts on a body of mass $20 \,kg$ for $10$ seconds. The change in its momentum is:

• A. 50 kg-m/s
• B. 100 kg-m/s
• C. 300 kg-m/s
• D. 1000 kg-m/s

Answer 1

Answer: (B)

100 kg-m/s

Answer 2

Given : $F=10 \,N , m=20\, kg$ $\Delta t=10\, sec$ The change in momentum of the body is given by $\Delta p =F \times \Delta t=10 \times 10$ $=100 \,kg - m / s$