Question

A particle starting with certain initial velocity and uniform acceleration covers a distance of 12 m in first 3 seconds and a distance of 30 m in next 3 seconds. The initial velocity of the particle is

• A. 3 ms\(^{-1}\)
• B. 2.5 ms\(^{-1}\)
• C. 2 ms\(^{-1}\)
• D. 1.5 ms\(^{-1}\)
• E. 1 ms\(^{-1}\)

Hint:

Always use the total distance for the second equation (12 + 30 = 42 m) at time \( t=6 \) s. It is much easier than calculating the velocity at \( t=3 \) s to use as the starting point for the second interval.

Answer 1

Answer: (E)