Question

the speed of a car is 54km/h. express this speed in m/s and calculate the distance covered by the car in 5 seconds.

Answer 1

to conver km in m we need to multiply it by 1000
and to conver hour into second we need to multiply it by 3600
so 54km/h = 54 ×(1000÷3600) m/s
=15m/s
so in 5second it will cover distance of 15 ×5 = 75 m
hope it helps.

Answer 2

speed of car = 54 km/h
in m/s it is 54 × 5/18 = 15 m/s

since in 1 second it covers 15 m in 5 sec it covers 15 × 5 = 75 m

Hope you got the answer .
Hope this will help you .
Thank you