Calculate the average recoil force exerted on the weapon during that burst.

[zhuyilun]

Homework Statement

A soldier on a firing range fires an 8-shot burst from an assault weapon at a full automatic rate of 1000 rounds per minute. Each bullet has a mass of 7.49 g and a speed of 299 m/s relative to the ground as it leaves the barrel of the weapon.

Homework Equations

The Attempt at a Solution

i don't understand how 8-shot burst and 1000rounds are related
i don't know how to start this question and what basic concept should be used

 

[tiny-tim]

i don't know how to start this question and what basic concept should be used

Hi zhuyilun!

When a bullet leaves a gun, the gun recoils, which means that it moves backwards.

It does so because of conservation of momentum.

(and what is the relationship between force and momentum?)

 

[zhuyilun]

Hi zhuyilun!

When a bullet leaves a gun, the gun recoils, which means that it moves backwards.

It does so because of conservation of momentum.

(and what is the relationship between force and momentum?)

i get this part now~! thanks, but what is the relationship between 8-shot burst and 1000 rounds per second

 

[tiny-tim]

i get this part now~! thanks, but what is the relationship between 8-shot burst and 1000 rounds per second

It's telling you that the burst takes .008 seconds.