A bullet fired vertically upwards reaches a height of 500m. Neglecting air resistance, calculate the magnitude of the initial velocity of the bullet. [g = 10ms‾²]

A. 500.0ms‾¹
B. 100.0ms‾¹
C. 70.0ms‾¹
D. 50.0ms‾¹

Correct Answer: Option B

Explanation

V² = U² + 2gs

V² = 0

V² = 2gs

h = 500m

g = 10ms‾²

V² = 2 x 10 x 500

V² = 10,000

V = 100ms‾¹