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two balls A and B are thrown from the top of a vertical cliff. Ball A is thrown horizontally reaching the ground in 3.5 s. Ball B is thrown with an initial velocity of 25 m/s at an angle of 30 above the horizontal.

a) what is the height of the cliff?

b) how far from the base of the cliff will B hit the ground?

c) what is the initial velocity of ball A if it hits the same point as ball B on yhe ground?

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