Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 1 - Motion
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A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
a) What is its average speed?
b) How far does it travel in 1 second?
c) How far does it travel in 6 seconds?
d) How long does it take to travel 240 m?
Answer:
a) Average speed = total distance travelled/total time taken = 150/5 = 30 m/s
b) Time = 1 s
Distance = (average speed)(time) = 30 m/s
c) Time = 6 s
Distance = (average speed)(time) = 180m/s
d) Distance = 240m
Time = Distance/average speed = 240/30 = 8s
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