Question

4. A gun fitted on the top of a moving car is aimed in
the backward direction at an angle 60° with the
horizontal. If the muzzle velocity of the bullet fired
from the gun is 8 m/s, then the speed of the car
for which the bullet comes out vertically is​

Answer 1

Answer:

Explanation:

a gun fitted on the top of a moving car is aimed in

the backward direction at an angle 60" with the horizontal If the muzzle velocity of the bullet fired

from the gun is 8 m/s, then the speed of the car

for which the bullet comes out vertically is

​

Gun is at angle of 60°

muzzle velocity of the bullet fired  = 8 m/s

Vertical Speed = 8Sin60° = 8√3/2 = 4√3 m/s

Horizontal Speed = 8Cos60° = 8 * (1/2) = 4m/s

Bullet to come out vertically

Horizontal speed should be cancelled out by speed of car

=> Speed of car = 4 m/s