Question

Will give medal!! Help! ->Both Ryan and Deland throw a tennis ball into the air. At any time, t, the height, h, of Ryan’s ball is modeled by the equation h = –16t2 + 30t + 5. Deland throws his tennis ball with the same acceleration, a, from the same initial height, h, but with an initial velocity, v, double that of Justin’s. Which equation best models the height of Deland’s rocket?

FORMULA: h(t) = at2 + vt + h0

Answer Choices:
h = –16t2 + 30t + 10
h = –32t2 + 60t + 10
h = –32t2 + 30t + 5
h = –16t2 + 60t + 5

Answer 1

D

Explanation:

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Answer 2

WE are given with h = –16t2 + 30t + 5 which represents the height of Ryan's ball through time where -16 is the acceleration, 30 is the initial velocity and 5 is the initial height. When the initial velocity is doubled, then the final equation becomes D. h = –16t2 + 60t + 5