physics

a tennis ball is served horizontally from 2.4 above the ground at 30 m/s the net is 12 m away and 0.9m high will be clear the net? a. 0.64m b. 1.62m c.2.72m d.none ans is option B .... but how? wanna solution..

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  1. how long does it take to go 12m at 30m/s ?
    12/30 = 0.4 seconds

    how far does the ball drop in that time?
    4.9*0.4^2 = 0.784 meters

    So now you know how high the ball will be starting from 2.4 meters up

    I think you can handle the math now, eh?
    I hope the result matches one of the choices.

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