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Given radius, r = 5 km
a) Here, the distance travelled by motor cycle = circumference of the circle (∵ the motor cycle moves one complete rotation)
= 2πr
= 2 × 3.14 × 5
= 31.4 km
b) Here, the initial point is P and the final point is also P. Therefore, there will be no change in position and hence the displacement is equal to zero.
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