SOLUTION: When a bullet is fired from a loosely held rifle,the ratio of the mass of the bullet to that of the rifle equals the negative of the reciprocal of the ratio of the velocity of the

Question 1197642: When a bullet is fired from a loosely held rifle,the ratio of the mass of the bullet to that of the rifle equals the negative of the reciprocal of the ratio of the velocity of the bullet to that of the rifle.If a 3.0kg rifle fires a 5.0g bullet and the velocity of the bullet is 300m/s,what is the recoil velocity of the rifle?
Thank you for answer.
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.
When a bullet is fired from a loosely held rifle,
the ratio of the mass of the bullet to that of the rifle equals
the negative of the reciprocal of the ratio of the velocity of the bullet to that of the rifle.
If a 3.0kg rifle fires a 5.0g bullet and the velocity of the bullet is 300m/s,
what is the recoil velocity of the rifle?
~~~~~~~~~~~~~~~~~~~~~

Write the proportion as you read the problem

     = ,

where "m" means the mass, v means velocity, index "b" means bullet, index"r" means riffle.


In the proportion, substitute the given values

     = 


and find the unknown 

    =  = - 0.5 m/s.    ANSWER


The sign " - " (minus) means that velocity of the riffle is directed opposite to that of the bullet.

Solved.

RELATED QUESTIONS
A force of 3.0 N is applied to an 8.0 gram rifle bullet. What is the bullet�s... (answered by jim_thompson5910)

A bullet is shot from a rifle with a speed of 720 m/s . What time is required for the... (answered by Alan3354)

A force of 2.8 N is exerted on a 8.0 g rifle bullet. What is the bullet�s... (answered by solver91311)

Any help with this would be greatly appreciated. This is all new to me and am having... (answered by sachi)

An observer stands 46.0 m behind a marksmen practicing at a rifle range. The marksman... (answered by ankor@dixie-net.com)

A marksman fires at a target 420 meters away and hears the bullet strike 2 seconds after... (answered by ankor@dixie-net.com)

Two seconds after firing a rifle at a target, the shooter hears the impact of the bullet. (answered by Theo)

Calculate the recoil velocity of a 5-Kg rifle that shoots a 0.020-Kg bullet at a speed of (answered by jim_thompson5910)

You fire a rifle at an angle of 45 degrees. Thus the initial horizontal and vertical... (answered by nerdybill,jsmallt9)