Question

. The speed of a scooter which covers 5 revolutions of a circular park of radius 7 m in 100 seconds is

Answer 1

Given :-

Revolutions covered by scooter in 100 sec. = 500

Radius of circluar park = 7m

To find :-

Speed of scooter ??

Solution :-

● Circumference of circular park = 2πr

= 2 × 7 × 22 /7

= 44 m

☆ Distance of 1 revolution = 44 m

☆ Distance of 5 revolutions = 44 × 5

= 220 m

● Speed = Distance / Time

⟹ Distance = 220 m,

⟹ Time = 100 sec.

■ Speed = 220/100

= 2.2 m/s ✔

Hope it helps !