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ICSE Class 7 Physics Question 12 of 18

Physical Quantities and Measurement — Question 16

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Question

Question 16

A boy travels with a speed of 10 m s-1 for 30 minute. How much distance does he travel?

Answer

Speed = 10 m s-1
time = 30 minutes
1 min = 60 sec
30 min = 60 x 30 = 1800 sec

distance = ?

Speed=distancetime10=distance1800distance=1800×10=18000 m\text{Speed} = \dfrac{\text{distance}}{\text{time}} \\[1em] \text{10} = \dfrac{\text{distance}}{\text{1800}} \\[1em] \text{distance} = 1800 \times 10 = 18000 \text{ m}

So, distance travelled = 18000 m or 18 km.