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20 February, 03:54

A 0.150 kg baseball is thrown upward with an initial speed of 20.0 m/s. what is the force on the ball when it reaches half of its maximum height

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  1. 20 February, 07:14
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    Since we are ignoring air resistance, the only force acting on the ball will be the force of gravity.

    According to Newton's second law:

    F = ma where:

    m is the mass of the ball = 0.15 kg

    a is acceleration due to gravity = 9.8 m/sec^2

    Substitute to get the force as follows:

    Force = 0.15 * 9.8 = 1.47 Newton
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