Physics;Help!!!!!!

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The question is in the first question marked physics beside Pamela.PLEASE ANSWER!!

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  1. A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s. If the ball has mass 0.15 kg and the boy's arm moved through 1.5 m as he threw the ball, then what average force did he exert on the ball?

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    posted by jaz
  2. A plane climbing up for .5 minutes has an acceleration for 15m/s2 (power of 2) If the plane has a beginning speed of 45m/s, what is the final speed

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    posted by Chammie
  3. A boy stands at the edge of a cliff and launches a rock upward at an angle of 45.0o
    . The
    rock comes back down to the elevation where it was released 2.25 s later, then continues
    until it is seen to splash into the lake below 4.00 s after release. How far below the point
    of release is the lake surface? What horizontal distance from the point of release is the
    splash?

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    posted by usman
  4. alump of lead with mass 0.50...

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    posted by B
  5. alump of lead with mass 0.50...

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  6. boi

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    posted by sarah
  7. yeet

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    posted by a person

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