Question

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

Explanation:

Step1: Recall the formula for change in velocity

The formula for change in velocity \(\Delta v\) is \(\Delta v=v_f - v_i\), where \(v_f\) is the final velocity and \(v_i\) is the initial velocity.

Step2: Substitute the given values

Given \(v_i = 30\space m/s\) and \(v_f=60\space m/s\). Then \(\Delta v=60 - 30\).

Step3: Calculate the result

\(60-30 = 30\space m/s\)

Answer:

B. \(30\space m/s\)