A bullet fired vertically upwards reaches a height of 500m. Neglecting air resistance, calculate the...
PHYSICS
WAEC 2015
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: B. 100.0ms-1
Explanation
V2 = U2 + 2gs
V2 = 0
V2 = 2gs
h = 500m
g = 10ms-2
V2 2 x 10 x 500
V2 = 10,000
V = \(\sqrt{10000}\)
V = 100ms-1
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *