Question 83

To cover a distance of 315 km in 2.8 hours what should be the average speed of the car in meters/second?

Solution

Distance = 315 km and time = 2.8 hours

Speed = distance/time

=> Speed = $$\frac{315}{2.8} = \frac{45}{0.4}$$ km/hr

$$\therefore$$ Speed in meters/second = $$\frac{45}{0.4} \times \frac{5}{18}$$

= $$\frac{25}{0.8} = 31.25$$ m/s

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