Question

A cyclist goes around a circular track of diameter 105m in 5 min. Calculate his speed and velocity at the end of 7 minutes 30 seconds.

Answer 1

distance covered=2πr
=2×22/7×105/2 m
=22×15 m
=330 m

T =7 min 30 sec
=60×7 +30 sec
= 420 + 30 sec
=450 sec
speed = 330/450 m/S
=0.733 m/s

displacement = 0 m

time= 450 sec

velocity= 0/450 m/s
=0m/s

Answer 2

Answer:

speed is 0.007 m/s

and velocity is 0 m/s