Question

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

Answer 1

Answer:

Here, diameter = 105m , radius (r) = 105 / 2

Time taken t = 5 × 60 = 300s

Speed , V = 2πr / t = 2 × 22 / 7 × 105 / 2 × 300 = 1.10 m/s .

Answer 2

Answer:

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