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Bob
Bob asked in Science & MathematicsPhysics · 2 years ago

Physics help?

A parachutist is falling at a constant velocity of 10 m/s when they drop a toy car. If the parachutist is 20m above the ground, how fast will the toy car hit the ground?

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  • Anonymous
    2 years ago
    Favorite Answer

    energy conservation:

    1/2 m v^2 = 1/2 m v0^2 + m g h

    then

    v = (v0^2 + 2 g h)^1/2

    v = (10^2 +2*9.8*20)^1/2 = 22. 2 m/s = 79.85 km/h

  • oubaas
    Lv 7
    2 years ago

    V = √Vo*2+2gh = √10^2+40*9.806 = 22.19 m/sec

  • Bob
    2 years ago

    Thank you so much for your help!

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