Question

While jogging Keyur complete one complete circle of playground in half hour, find Speed, Distance, Displacement of Kayur after 2 hours of jogging

Answer 1

keyur completes distance in 1800 second which is equal to the circumference of the circle,

thereofore speed =circumference of the circle/1800

distance after 2 hour i.e. 7200 second = 4 * circumference of the circle.

since it is completng 4 rounds of the circle in 2 hours therefore it is coming back to its original position hence the initial and final position of keyur is same and the displacement is 0

Answer 2

Speed = distance / time

Distance = Circumference of the Circle

Speed = 2pieR/120

Speed =pie*r/60(in terms of mins not seconds)

Distance = speed * time

Distance = pie * r /15 * 120(converted to mins)

Distance = 8*pie*r

Displacement= 0

Because after 2 hours he finishes 4 rounds and stops at the same position from where he started

To find the answers in terms of seconds pls convert the time into seconds