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anonymous

  • one year ago

A 4kg ball is dropped from a heught of 15 m from the floor, what is the kinetic energy when it strikes the floor? Use conservation of energy

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  1. anonymous
    • one year ago
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    What kind of energy do you think the ball has before it's dropped?

  2. sohailiftikhar
    • one year ago
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    first find P.E throw mgh

  3. arindameducationusc
    • one year ago
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    mgh=P.E

  4. arindameducationusc
    • one year ago
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    4*9.8*15

  5. sohailiftikhar
    • one year ago
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    (4)(15)(10)=600 take g=10m/s^2

  6. sohailiftikhar
    • one year ago
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    for accurate value g=9.8m/s^2 (4)(15)9.8=closer to 600m/s

  7. sohailiftikhar
    • one year ago
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    as total energy remains conserved so at max height all energy equal to P.E and K.E=0 and at closer to ground all energy is K.E and P.E=0 but total energy remain same so your .K.E will also be (4)15)(9.8)=?

  8. anonymous
    • one year ago
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    588 J ?

  9. sohailiftikhar
    • one year ago
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    yes

  10. anonymous
    • one year ago
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    thank you :)

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