Question

3. Which of the following can
sometimes be 'zero' for a moving
body?
i. Average velocity
ii. Distance travelled
O
iii. Average speed​

Answer 1

Solution :

$\orange{ \bigstar} \: \boxed{ \red{\large\sf{Average \: Velocity}}}$

✏ Average velocity is defined as ratio of total displacement to the total time taken by moving body.

✏ Displacement is defined as the shortest distance between the two point.

✏ Displacement of the body can be zero. (i.e. return to the starting point)

✏ So, Average velocity of the moving body can be zero.

$\orange{ \bigstar} \: \boxed{ \large \sf{ \blue{Distance \: travelled}}}$

✏ Distance travelled is defined as the total length between two points covered by moving body.

✏ So, Distance travelled of the moving body can't be zero.

$\orange{ \bigstar} \: \boxed{ \sf \large{ \pink{Average \: Speed}}}$

✏ Average speed is defind as the ratio of total distance to the total time taken by the body.

✏ We know thart, total distance can't be zero.

✏ So, Average speed of the moving body can't be zero.

• Additional information:

✏ Displacement and average velocity are vector quantities.

✏ Distance and average speed are scalar quantities.

Answer 2

Answer:

i. Average velocity can be zero