The muzzle velocity of a bullet fired from a new rifle is 100 m/s. Neglecting air resistance, at the end of one second a bullet fired straight up into the air will have traveled a distance of
A)(100 - 5)m.
B)(100 + 5)m.
C)100 m.
D)5 m.
E)none of the above

Question

Quizplus · Accepted Answer

The bullet will have traveled (100 - 5)m because it starts with an initial velocity of 100 m/s, and after one second, it would have slowed down due to gravity (approximately 9.8 m/s^2, rounded to 10 m/s^2 for simplicity). Thus, it travels 100 m upwards minus the 5 m it would have fallen due to gravity in the last second, resulting in a net distance of (100 - 5)m.

The Muzzle Velocity of a Bullet Fired from a New