Kinematics Question 356

Question: Stopping distance of a moving vehicle it’s directly proportional to

Options:

A) square of the initial velocity

B) square of the initial acceleration

C) the initial velocity

D) the initial acceleration

Show Answer

Answer:

Correct Answer: A

Solution:

Let s be the distance travelled by the vehicle before it stops. Final velocity $ v=0 $ , initial velocity = u Using equation of motion $ v^{2}-{{u}^{2}}\text{= 2aS} $

$ 0^{2}-{{u}^{2}}\text{= 2aS} $ Stopping distance, $ \text{S }=-\frac{{{u}^{2}}}{2a} $



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