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  Please solve for me 12, 13, 14 problems for me. Thank you

12) What initial velocity is needed to fire an arrow 450 m? Assume the optimum angle from part c) above. 13) A cliff-jumper runs off a 28 m cliff. The rocks below jut out 5.2 m from the base of the cliff. What is the minimum horizontal velocity needed to hit the water and avoid the rocks? 14) A large rock falls from the side of a cliff. It falls 8.5 m before striking a car driving at 95 km/hr. From the frame of reference of the car, what is the velocity and angle of impact?

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Answer #1

optimum angle is needed to solve the que 12 which is missing so i'm solving que no 13.

13.

28m Supfose it taket seand ts tet the water 5.2 2 9.8( 5.2 2.39

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