Question

A car moving at 5m/s speeds up to 15m/s in 4 seconds. Assuming that it moves in a fixed direction with a uniform acceleration , find its acceleration.​

Answer 1

Answer:

Explanation:

Given,

Here, we have

Initial velocity of the car, u = 5 m/s

Final velocity of the car, v = 15 m/s

Time taken by the car, t = 4 seconds

To Find,

Acceleration of the car, a = ?

Formula to be used,

Acceleration formula i.e

a = v - u/t

Solution,

Putting all the value, we get

a = v - u/t

⇒ a = 15 - 5/4

⇒ a = 10/4

⇒ a = 5/2

⇒ a = 2.5 m/s².

Hence, the acceleration of the car is 2.5 m/s².