Question

The displacement of a particle is given by $\sqrt{x}=t+1$. Which of the following statements about its velocity is true?

• A. It is zero
• B. It is constant but not zero
• C. It increases with time
• D. It decreases with time

Answer 1

The correct option is C It increases with time

$x=t^2+2t+1$
Hence $v=\frac{dx}{dt}=2t+2$. It increases with time.