Question

3. A cyclist completes half round of a circular track of radius 318m in 1.5 minutes. Find its speed.

Answer 1

Explanation:

distance =1 and a half circumference

=2πr+πr

=3πr

r=70m

=3π*70

=210*22/7

=660m

So,distance is 660m

displacement is 2r=140m

t=10min

=600sec

speed=d/t

=660/600

=66/60

=11/10m/s

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