Question
Question: A vehicle moves west with a speed of 50 ms<sup>-1</sup> and then towards north with a speed of 50 ms...
A vehicle moves west with a speed of 50 ms-1 and then towards north with a speed of 50 ms-1 only. Total time taken by the body is 5s. What is the average acceleration of the body?
A
0
B
50ms-2
C
14ms-2
D
20.4 ms-2
Answer
14ms-2
Explanation
Solution

Change in velocity
= 502+502=5000=70.7ms−1
∴ acceleration = change in velocity/time
= 70.7/5 = 14.14 ms-2.