High School

Example:

We can use the concept of work to calculate the braking distance of a car.

A car with a mass of 1500 kg is traveling at a speed of 20 m/s. The brakes apply a force of 5000 N to slow down and stop the car.

Calculate the braking distance of the car.

Answer :

The braking distance of the car from the question is 60 m

What is the braking distance?

The braking distance is the distance traveled by a vehicle after the brakes have been applied, until it comes to a complete stop. It is the sum of the thinking distance (the distance traveled by the vehicle while the driver reacts to a hazard and decides to apply the brakes) and the braking distance (the distance traveled by the vehicle while the brakes are being applied to slow it down).

Given that;

F = ma

a = F/m

a = 5000 N/1500 Kg

a = 3.33 m/s^2

Given that;

v^2 = u^2 - 2as

Since v = 0

u^2 = 2as

s = u^2/2a

s = (20)^2/2 * 3.33

s = 60 m

Learn more about distance:https://brainly.com/question/15172156

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