Hey! Sign in to get help with your study questionsNew here? Join for free to post

Difficult physics question

Announcements Posted on
Four hours left to win £100 of Amazon vouchers!! Don't miss out! Take our short survey to enter 24-10-2016
    • Thread Starter

    A basic air riffle fires slugs of mas 0.50g at a velocity of 160ms-1.
    a)suppose the air rifle of mass 0.80 kg is free to move wen a slug is fired. Calculate the speed which it recoils?
    b)normally the rifle is being held.what mean force does the person experience to prevent the rifle recoiling more the 0.50mm when he fires?

    1) Use the fact that momentum is conserved to find the speed of recoil, remembering that when the air rifle was fired it was at rest.
    2) From (a) you should have found the speed hence use a SUVAT equation to find the acceleration required to ensure the rifle recoils only 0.5mm before it comes to rest. Then use the F=ma to find that force.
Write a reply…


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: August 31, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Would you rather find

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.