Question

A body travels in a semi-circular path of radius 6 m. What is the ratio of
speed and velocity, if the time taken to travel this path is 11s?
(a) π : 1
(b) 7:22
(c) 1:π
(d) 22:7​
plz give the full solution

Answer 1

It's speed is = distance/time

And velocity is = displacement/time

Distance = 2*π*6/2 = 6π (divided by 2 since it's a semi circle)

So speed = 6π/11

Displacement = 2r = 2*6 = 12 (since opposite points , shortest distance is through diameter)

So velocity will be = 12/11

Ratio = Speed/velocity = (6π/11)/(12/11)

=6π/12

=π/2

I'm pretty sure about my answer , please check your options

Answer 2

Answer:

(a) is the answer

Explanation: given wrong in the person book that (a) is the answer. But answer is pi:2