Arifle is a long-barreled firearm which imparts a high velocity to a small ballistic, called a bullet, by exploding a charge behind the bullet. a rifle is typically 6 kg, and the bullet is 12 grams. the velocity of the bullet upon leaving the barrel is 300 m/s. take the system to mean the combination of rifle and bullet. what is the momentum of the system, bullet and rifle just after the bullet leaves the barrel?

The momentum of the system, bullet and rifle just after the bullet leaves the barrel is zero, 3.6 kg m/s and -3.6 kgm/s respectively

Explanation:

Given that,

Mass of the rifle = 6 kg

Mass of the bullet = 12 g

Velocity of bullet = 300 m/s

We need to calculate the momentum of bullet

Using formula of momentum

Where, m = mass of bullet

v = velocity of bullet

Put the value into the formula

The momentum of the bullet is 3.6 kgm/s.

The momentum of rifle is opposite direction of momentum of bullet and equal in magnitude.

The momentum of rifle = - 3.6 kgm/s

Therefore, The momentum of system must be zero.

Hence, The momentum of the system, bullet and rifle just after the bullet leaves the barrel is zero, 3.6 kg m/s and -3.6 kgm/s respectively.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.