Question

A bullet is found embedded in the wall of a room 2.4 m above the floor. The bullet entered the wall going upward at an angle of 13°. How many meters from the wall was the bullet fired if the gun was held 1.3 m above the floor? (Round your answer to two significant digits.)

Answer 1

since the distances are so short, and the speed of the bullet is so great, we can treat the path of the bullet as a straight line. So,
(2.4-1.3)/x = sin13°
x = 1.1/sin13° = 4.8899
so, the gun was about 5 meters away.