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ICSE Class 7 Physics Question 18 of 18

Physical Quantities and Measurement — Question 17

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Question 17

A car travels with a speed 12 m s-1, while a scooter travels with a speed 36 km h-1. Which of the two travels faster?

Answer

Speed of car = 12 m s-1

Speed of scooter = 36 km h-1

1 km h-1 = 518\dfrac{\text{5}}{\text{18}} m s-1

36 km h-1 = 36 x 518\dfrac{\text{5}}{\text{18}} = 10 m s-1

So speed of scooter = 10 m s-1

So car travels faster than scooter; since speed of car is more than that of scooter.