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22/10/2021 7:34 pm
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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?
1 Answer
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22/10/2021 7:40 pm
(a) Average speed vav = \(\frac{Total\;distance\;covered}{Total\;time\;taken}\)
= \(\frac{150}{5}\) = 30 m/s
(b) Time = 1s
Distance = Vav x time = 30 x 1 = 30 m/s
(c) Time = 6s
Distance = Vav x time = 30 x 6 = 180 m/s
(d) Distance = 240 m
Time = \(\frac{Distance}{V_{av}}\) = \(\frac{240}{30}\) = 8 s