Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

impulse, momentum and coefficient of restitution further maths question help watch

    • Thread Starter
    Offline

    8
    ReputationRep:
    I need help with this question i only need part (ii) but i attached part (i) as well.
    https://imgur.com/a/JPPx0.

    this is my working out for it which gives the wrong answer ive attached my working for part (i) also.
    https://imgur.com/95z2STk


    i dont know what to do, i feel like ive made a silly mistake somewhere but i just dont know where ive gone wrong.

    if you could help me out that would be wonderful.

    thank you
    • Study Helper
    Offline

    15
    Study Helper
    (Original post by amin11234)
    I need help with this question i only need part (ii) but i attached part (i) as well.
    https://imgur.com/a/JPPx0.

    this is my working out for it which gives the wrong answer ive attached my working for part (i) also.
    https://imgur.com/95z2STk


    i dont know what to do, i feel like ive made a silly mistake somewhere but i just dont know where ive gone wrong.

    if you could help me out that would be wonderful.

    thank you
    You've worked out the velocity of B following the 1100 Ns impulse, incorrectly.

    The initial velocity of B was 20 m/s, and it suffers a retarding impulse due to the string, so how can it now be 25.5 m/s ?

    Have another think/go.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 11, 2018
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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

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