Question

For a body moving along x-axis, the distance travelled by body from a reference point is given as function of time t as x = at² + b, where a and b are constants, then the dimension of $\sqrt{ab}$ is same as -

• A. Speed
• B. Distance traveled
• C. Acceleration
• D. None of these

Answer 1

Answer: (A)

Speed

Answer 2

As x = at² + b therefore [a] = [LT^–2] and [b] = [L]

\ [ab] = [L² T^–2]