Question

the speed of a car is 54 kilometre per hour Express this speed in metres per second and calculate the distance covered by the cars in 5 second

Answer 1

Velocity =54*5/18=15 m/s
Time= 5sec
Distance = velocity *time =15*5=75m

Hope it helps you

Answer 2

The speed of the car=54km
                                     =54000m/3600seconds
                          speed=15m/s
If t= 5seconds,
then speed =
             15=d/5
                   d=15*5
                       therefore distance covered is 75 meters