Question

ue. 1: Define uniform motion. A car changes its velocity from 36 km/hr to 54 km/hr in 2.5 seconds. Calculate

acceleration of car.​

Answer 1

Question 1 :

Define uniform motion :

Answer=>>

In Physics, uniform motion is defined as the motion, wherein the velocity of the body travelling in a straight line remains the same.

In simple words we can say that In Uniform Motion, Equal Distance is Traveled even over Small Distances.

Question 2:

A car changes its velocity from 36 km/hr to 54 km/hr in 2.5 seconds. Calculate

acceleration of car.

Answer ==>>

Given:

Initial velocity = 36 km/hr = 10m/s

Final velocity = 54 km/hr = 15 m/s

Time taken = 2.5 sec

acceleration=?

We have,

Formula for acceleration

$a = \frac{ \: \: v - u \: }{t} = \frac{15 - 10}{2.5} = \frac{5}{2.5} = \frac{2m}{ {sec}^{2} }$

Therefore, acceleration of a car = 2m/sec²