The height in feet of the projectile seconds after lunch is modeled by the equation h=32t - 16t2 how long after launch does the projectile return to the ground

Question

Ellis Shepard

Mathematics

29 August, 17:57

The height in feet of the projectile seconds after lunch is modeled by the equation h=32t - 16t2 how long after launch does the projectile return to the ground

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Answers (1)

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Jovanni Avery · Answer 1

When h=0 is when it returns to the ground

solve

0=32t-16t^2

factor

0=16t (2-t)

set equal to zero

0=16t

0=t

0=2-t

t=2

at t=0 and 2

it returns after 2 seconds