Question
Question: The muzzle velocity of a certain rifle is 330 ms<sup>-1</sup>. At the end of one second, a bullet fi...
The muzzle velocity of a certain rifle is 330 ms-1. At the end of one second, a bullet fired straight up into the air will travel a distance of
A
(330 - 4.9) m
B
330 m
C
(330 + 4.9) m
D
(330 - 9.8) m
Answer
(330 - 4.9) m
Explanation
Solution
Using h = ut + at2, we get
h = 330 × 1 - 1/2 × 9.8 × 1
= (330 - 4.9) m.