Question

An athlete running on a circular track of radius 5 m completes one round in 12 seconds. calculate the speed and velocity.

Answer 1

Explanation:

Distance=2πr =2×22/7×5=220/7=31.42m (approx)

Speed=Distance/Time=31.42/12=2.6m/s(approx(

Displacement=Diameter of track=2r=5×2m=10m

Velocity=Displacement/Time=10/12m/s=0.8m/s (approx)

Answer 2

Answer:

Distance=2πr =2×22/7×5=220/7=31.42m (approx)

Speed=Distance/Time=31.42/12=2.6m/s(approx(  

Displacement=Diameter of track=2r=5×2m=10m  

Velocity=Displacement/Time=10/12m/s=0.8m/s (approx)

Explanation:

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