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anonymous

  • 4 years ago

a ball is thrown vertically downward with a speed of 3.0m/s.find its speed when it has travelled a distance of 5m.

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  1. y2o2
    • 4 years ago
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    you have to state the gravitational acceleration.

  2. anonymous
    • 4 years ago
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    i think the gravitational acceleration is 9.81m/s^2. a question is given like that without state the gravitational acceleration.

  3. y2o2
    • 4 years ago
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    So you'll use the third Equation of motion: v² = u² + 2as so v² = 3² + 2*9.81*5 =107.1 v = sqrt(v²) = 10.349 m/s

  4. anonymous
    • 4 years ago
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    tq very much..i'm appreciate it..

  5. y2o2
    • 4 years ago
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    I'm glade it helped :)

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