A small object of mass 50 g is released from a point A. Determine the velocity of the object when it reaches point B; a vertical distance of 30m below A. [g = 10 ms−2]

A. 1.5 ms−1
B. 6.0 m s−1
C. 17.3 m s−1
D. 24.5 m s−1

Correct Answer:

Option D = 24.5 m s−1

Explanation

v = ?, u = 0, a = 10, s = 30

V² = U²+2as
V² = 0 + 2 * 10 * 30
V² = 0 + 600
V = √600
V = 24.5m/s