Question

A car is moving at a speed of 54 km/h. In the next second the speed is 63 km/h. Calculate the distance covered by car in one second.

Answer 1

54 km/h=$54*5/18$ m/s
=15 m/s (initial velocity u)
63 km/h=$\frac{63*5}{18}$=17.5 m/s  (final velocity v)
Difference in speeds:(v-u)
=(17.5-15)m/s
=2.5 m/s
So 2.5 m is the distance covered by the car in 1 sec.
Ans: 2.5 m is the distance covered by the car in 1 sec..
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