Question

5 if initial velocity of a moving car is 30 m/s and its final velocity is 60 m/s, what is its average velocity? a 30 m/s b 45 m/s c 90 m/s d 15 m/s

Explanation:

Step1: Recall the formula for average velocity

For uniformly accelerated motion, the average velocity \(v_{avg}=\frac{v_{i} + v_{f}}{2}\), where \(v_{i}\) is the initial velocity and \(v_{f}\) is the final velocity.

Step2: Substitute the given values

Given \(v_{i} = 30\space m/s\) and \(v_{f}=60\space m/s\), then \(v_{avg}=\frac{30 + 60}{2}\).
Calculate the numerator: \(30+60 = 90\).
Then \(v_{avg}=\frac{90}{2}=45\space m/s\).

Answer:

B. \(45\space m/s\)