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    Hi,

    I've done parts i. and ii. however I'm stuck on part iii.

    If you have the loss of mechanical energy due to air resistance how do you work out the magnitude of the air resistance on the ball? And then, how do you work out the speed at which the ball lands.

    The gain in potential energy is 8.76J.
    The loss of mechanical energy due to air resistance is 3.24J.

    Thanks
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    (Original post by VioletPhillippo)
    Hi,

    I've done parts i. and ii. however I'm stuck on part iii.

    If you have the loss of mechanical energy due to air resistance how do you work out the magnitude of the air resistance on the ball? And then, how do you work out the speed at which the ball lands.

    The gain in potential energy is 8.76J.
    The loss of mechanical energy due to air resistance is 3.24J.

    Thanks
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    (Original post by VioletPhillippo)
    Loss of mechanical energy = work done against air resistance
    = maginude of air resistance x distance travelled

    How far has it travelled on the way up?

    Then it will lose more mechanical energy on the way down.
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    (Original post by tiny hobbit)
    Loss of mechanical energy = work done against air resistance
    = maginude of air resistance x distance travelled

    How far has it travelled on the way up?

    Then it will lose more mechanical energy on the way down.
    Thanks so much, I completely forgot about work done= force × distance!
 
 
 
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