Question

when brakes are applied the velocity of a car changes form 40m/s to 10m/s in 10 seconds.The acceleration produced in it is
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Answer 1

Answer

The acceleration produced in it is 3m/s²

Answer 2

Given:

Initial speed = u=40 m/s

Final speed = v=10 m/s

Time = 10 seconds

To find:

Acceleration.

Solution:

We can solve the above problem by using this approach.

We know that acceleration is "the rate at which the velocity changes with time."

First we calculate the difference between the two velocities = v - u = 40 - 10 = 30 m/s.

We know that, $a = \frac{v - u}{t}$

On substituting in the above equation, we get $a = \frac{30}{10} = 3 m/s^{2}.$

Therefore, the acceleration produced in it is 3 m/s².