Acar, on a straight road, is stopped at a traffic light. when the light turns to green the car accelerates with a constant acceleration. it reaches a speed of 19.1 m/s (68.8 km/h) in a distance of 101 m. calculate the acceleration of the car.

Acceleration of the car will be equal to

Explanation:

As the car is initially stop so initial velocity of the car u = 0 m /sec

It is given that after moving a distance of 101 m velocity of car is 19.1 m/sec

So final velocity of the car v=19.1 m/sec

We have to find the acceleration of the car

From third equation of motion we know that

So

So acceleration of the car will be equal to

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle