Question

A car traveling 89 km/h is 230 m behind a truck traveling 73 km/h
How long will it take the car to reach the truck?

Answer 1

let the relative speed of the 2nd car be zero. therefore the speed of the first car is 16km/hr or 4.44m/sec

time taken by this car to travel 230m is 52 secs. (approx)

Answer 2

Firstly the relative speed is

89km/hr (car) - 73km/hr (truck)

= 16km/hr or 4.45m/sec

speed = dist/time

therefore :

time =230/4.45

=51.68  aprox 52 sec