Question

A ball is thrown upwards, which attains a height of $10\text{m}$ and comes back to the same position.
$i$ What is the net distance?
$ii$ What is the net displacement?

• A. $i.10\text{m},ii.0$
• B. $i.20\text{m},ii.0$
• C. $i.10\text{m},ii.10\text{m}$
• D. $i.20\text{m},ii.20\text{m}$

Answer 1

The correct option is B $i.20\text{m},ii.0$

Since the ball attains height of $10\text{m}$ and comes back to the same position, we have the values for distance and displacement as
$i.$ Distance is the total path length, so, it will be $10+10=20\text{m}$
and,
$ii.$ as the ball returns to the same position, the initial and final positions are same, hence the displacement of the ball will be zero.