Question

A truck starts from rest with an acceleration of 1.5 m/sec2 while a car 50 meter behind starts from rest with an acceleration of 2.5 m/sec2. How long will it take before both the truck and car are side by side

Answer 1

Explanation:

The truck starts from rest

means intial speed is 0

u=0

After accelerate 1.5m/2s

Means the final velocity will be

v=u+at

v= 0+1.5×2

v= 3m/s

The car which is 50 m behind starts from rest with an acceleration of 2.5m/s

v=u +at

v= 0+ 2.5×2

v= 5m/s

Means the car which is 50 m behind the truck are running at the speed of 5m/s

The distance between Car and Truck = 50m

So the time taken by the car and the truck to be side by side

Time= Distance/Speed of Car

Time= 50/5= 10 sec.