Question

A force of 0.6 N acting on a particle increases its velocity from 5.0 m $s^{-1}$ to 6.0 m $s^{-1}$ in 2 s. What is the mass of the particle?

• A. 1.2 kg
• B. 2.2 kg
• C. 4.2 kg
• D. 6.2 kg

Answer 1

The correct option is A 1.2 kg

$a=\frac{\Delta v}{\Delta t}=\frac{6-5}{2}=0.5m{s}^{-2}$

$F=ma$

$\therefore m=\frac{F}{a}=\frac{0.6}{0.5}=1.2kg$