Kinematics Question 423
Question: A particle is moving with velocity 5 m/s towards east and it’s velocity changes to 5 m/s north in 10 seconds. Find the average acceleration in 10 seconds.
Options:
A) $ \sqrt{2}N-W $
B) $ \frac{1}{\sqrt{2}}N-W $
C) $ \frac{1}{\sqrt{2}}N-E $
D) $ \sqrt{2}N-E $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ \vec{a}=\frac{{{{\vec{V}}} _{f}}-{{{\vec{V}}} _{i}}}{{\Delta _{t}}} $ $ \vec{a}=\frac{5\hat{j}-5\hat{i}}{10} $ $ |\vec{a}|=\frac{5\sqrt{2}}{10}=\frac{1}{\sqrt{2}}m/s^{2} $ Direction North West
BETA
