Question

In which case the magnitude of acceleration will be greater when a car starts from rest or when the brakes are applied suddenly?

Answer 1

When a car starts moving it begins to gain velocity. Which means the acceleration is positive.coz, accelaration is the rate of change in velocity. When brakes are applied the moving car loses velocity and may even come to rest. So, in this case the acceleration is negative. Hence, acceleration in case of a car starting from rest is more than the acceleration of a car applying the brake suddenly.

Answer 2

Answer:

Explanation:

When brakes are applied the moving car loses its velocity, and further may come to rest. So, here the acceleration is negative. Hence, acceleration in case of the car starting from rest is greater as it is positive, more than the acceleration of a car applying brake where it is negative.