Question

A boy takes one complete round of circular track of radius 21m while a girl walks along the diameter of the same track .calculate the distance travelled and the displacement by the boy and the girl.

Answer 1

Answer:

Boy: distance = 132m displacement = 0

Girl : distance = 42m displacement = 42m

Explanation:

the distance traveled by the boy is equal to the circumferance of the circle since he ran 1 round.. distance = 2πr but since he came to the starting point after finishing a round displacement = 0.

for girl displacement and distance same is equal to diameter of the circle

Answer 2

Answer:

Distance travelled by boy- 132m and displacement travelled by boy- 0m

Distance travelled by girl- 42m and displacement travelled by girl- 42m