Question 56

What distance will be covered by a car moving at 72 km/h in 10 seconds?

Solution

time = 10 seconds

speed = 72 km/h

= $$72\times\frac{1000}{3600}$$ m/s [1km = 1000m and 1h = 3600 seconds.]

= $$2\times10$$ m/s

= 20 m/s

Distance = $$speed\times time$$

= $$20\times10$$

= 200 m

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