A cheetah runs a distance of 200 metres in 10 seconds.What is the speed of the cheetah in

(a) m/s,
(b) km/h?

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Solution

Speed is given by the expression,

$Speed = \frac{Distance}{Time} (a) Distance travelled by cheetah = 200 m Time taken = 10 \sec Speed = \frac{200}{10} = 20 m / s (b) Distance travelled by cheetah = 200 m = \frac{200}{1000} km = 0.2 km (1 km = 1000 m) Time taken = 10 \sec = \frac{10}{60 \times 60} hours (1 hour = 60 minutes and 1 minute = 60 seconds) So, speed = \frac{0.2}{(\frac{10}{60 \times 60})} = 72 km / h$

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A cheetah runs a distance of 200 metres in 10 seconds.What is the speed of the cheetah in (a) m/s, (b) km/h?

Speed is given by the expression, Speed=DistanceTime(a) Distance travelled by cheetah=200 mTime taken=10secSpeed=20010=20 m/s(b) Distance travelled by cheetah=200 m=2001000 km=0.2 km(1km=1000m)Time taken=10sec=1060×60hours(1 hour=60 minutes and 1minute=60 seconds)So, speed=0.2(1060×60)=72 km/h

A cheetah runs a distance of 200 metres in 10 seconds.What is the speed of the cheetah in

(a) m/s,
(b) km/h?