Question

A body of mass $100\text{g}$ is at rest on a smooth surface. A force of $0.1\text{N}$ starts to act on it for $5\text{s}$. Calculate the distance travelled by the body during this time interval.

• A. $12.5\text{m}$
• B. $25.5\text{m}$
• C. $15.5\text{m}$
• D. $35.5\text{m}$

Answer 1

The correct option is A $12.5\text{m}$

We know that,

$F=ma$

$\Rightarrow a=\frac{F}{m}=\frac{0.1}{0.1}=1{\text{m/s}}^2$

Now, distance travelled during this time interval,

$s=ut+\frac{1}{2}a{t}^2=0\times 5+\frac{1}{2}\times 1\times 5^2$

$\Rightarrow s=12.5\text{m}$

Hence, option $\left(A\right)$ is the correct answer.