Question 1202685
(a) Given that the truck is 5 metres long determine the length of the train in metres

convert km/h to m/s

Truck speed - train speed

Catch up speed = 1.389 m/s

Distance to cover is length of train and Truck
Let length of train be x meters
time = 1 1/2 min = 90 seconds

(5+x) = 1.389*90
5+x = 125.01

x = 120 m approx