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physics- projectile motion

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A player passes a basketball to another player who catches it at the same level from which it was thrown. The initial speed of the ball is 7.1 m/s, and it travels a distance of 4.6 m. What was (a) the initial direction of the ball and (b) its time of flight?

  • physics- projectile motion -

    Use this relationship between distance travelled (D) and angle (A):

    D = 2(V^2/g)sinA cos A
    = (V^2/g)sin(2A)

    You know V, g, and D and so can solve for the angle 2A. Then divide 2A by 2. That will give you the angle A.

    For the time of flight T,
    V cos A*T = 4.6 m

  • physics- projectile motion -

    A) 32 degrees
    B)0.76 seconds

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