Question

The displacement x of a particle moving in one dimension is related to time by the equation t = (√x +3), where x is in m and t in s. The displacement, when velocity is zero, is

• A. 1m
• B. 2m
• C. 4 m
• D. Zero

Answer 1

Answer: (D)

Zero

Answer 2

Here t = √x + 3 or √x = t – 3

or x = (t - 3)² = t² – 6t + 9

$\frac{dx}{dt} = v = 2t - 6 = 0$

or t = 3s

3 = √x + 3 or x =