Question

If the displacement of a body is in direct proportion to the square of the time lapsed, then the acceleration is

• A. Increasing
• B. Constant
• C. Decreasing
• D. Can't say

Answer 1

The correct option is B

Constant

From second equation of motion,

s=ut+$\frac{a{t}^2}{2}$

If the initial velocity, u is zero then the equation reduces to

s=$\frac{a{t}^2}{2}$

This is the equation of uniformly accelerated motion.