Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    16
    ReputationRep:
    I just disagree with answer and now am confused:
    Q: "Use your knowledge of physics to state if each statement is correct or incorrect"
    .....
    "(b) A ball is thrown vertically upwards. Air resistance has negligible effect on its motions. During the flight, the total energy of the ball remains constant"

    So I put incorrect, because obviously air resistance is what makes the ball slow down and meet its maximum height. I also thought they were going to be annoying and say some energy was lost to heat, so I went with incorrect, sounded more plausible to me...BUT APPARENTLY NOPE.
    The answers was Correct: Total energy stays the same as KE => GPE and visa versa. They completely ignored the air resistance bit of the statement in the mark scheme... so urmmmm? What?? Lol
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by joe12345marc)
    I just disagree with answer and now am confused:
    Q: "Use your knowledge of physics to state if each statement is correct or incorrect"
    .....
    "(b) A ball is thrown vertically upwards. Air resistance has negligible effect on its motions. During the flight, the total energy of the ball remains constant"

    So I put incorrect, because obviously air resistance is what makes the ball slow down and meet its maximum height. I also thought they were going to be annoying and say some energy was lost to heat, so I went with incorrect, sounded more plausible to me...BUT APPARENTLY NOPE.
    The answers was Correct: Total energy stays the same as KE => GPE and visa versa. They completely ignored the air resistance bit of the statement in the mark scheme... so urmmmm? What?? Lol
    Oh right lol, figured it out no worries. For anyone else with the same problem in the distant future : the higher it gets, the higher the GPE (as height increases), therefore the lower the KE. This keeps occuring until KE=0 then it falls and same basic stuff. I think xD
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brexit voters: Do you stand by your vote?
    Help with your A-levels

    All the essentials

    The adventure begins mug

    Student life: what to expect

    What it's really like going to uni

    Rosette

    Essay expert

    Learn to write like a pro with our ultimate essay guide.

    Uni match

    Uni match

    Our tool will help you find the perfect course for you

    Study planner

    Create a study plan

    Get your head around what you need to do and when with the study planner tool.

    Study planner

    Resources by subject

    Everything from mind maps to class notes.

    Hands typing

    Degrees without fees

    Discover more about degree-level apprenticeships.

    A student doing homework

    Study tips from A* students

    Students who got top grades in their A-levels share their secrets

    Study help links and info

    Can you help? Study help unanswered threadsRules and posting guidelines

    Sponsored content:

    HEAR

    HEAR

    Find out how a Higher Education Achievement Report can help you prove your achievements.

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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.