Question

a) 12 m/s
b) 6 m/s
c) 2 m/s
d) 0 m/s
8. Find the average speed of a bicycle of its completes two round of a circular track
of radius 140 m twice in 5 min 52 sec
a) 10 m/s
b) 5 m/s
c) 2 m/s
d) 4 m/s​

Answer 1

Answer:

Total distance=2*(2πr). (circumference=2πr).

=2(2*22/7*140). (radius=140)

=1760metres.

time taken=5minutes 52seconds

=(60*5)+52 seconds

=300+52

=352seconds.

speed=distance/time taken

=1760/352

=5metre/seconds. (option-B)

This is explaination in step by step

i hope it will help you.