Question

A car driver increases the speed of his car from 15 m/s to 25 m/s in 2 seconds. Find acceleration of the car.

Answer 1

Answer:

• 5m/s² is the required acceleration of the car .

Explanation:

According to the Question

It is given that,

• Initial velocity ,u = 15m/s
• Final Velocity ,v = 25m/s
• Time taken ,t = 2 s

we have to calculate the acceleration of the car.

As we know that acceleration is defined as the rate of change in velocity at per unit time.

or

Rate of Change in Velocities .

• a = v-u/t

by putting the value we get

↠ a = 25-15/2

↠ a = 10/2

↠ a = 5m/s²

• Hence, the acceleration of the car is 5m/s².

Answer 2

Given that,

Initial velocity = u = 15m/s

Final Velocity = v = 25m/s

Time = 2 seconds

To Find?

Acceleration = ?

Solution

As, we know that

Acceleration = final velocity-initial velocity/time

a = v-u/t

a = 25-15/2

a = 10/2

a = 5m/s²

Hence, the acceleration of the car is 5m/s².