A projectile is launched upward from a height of 704 feet with an initial velocity of 112 ft/s. The equation gives the height h

Question

erma4kov [3.2K]

3 years ago

10

A projectile is launched upward from a height of 704 feet with an initial velocity of 112 ft/s. The equation gives the height h

after t seconds. find the number of seconds until it returns to the ground

Mathematics

1 answer:

Feliz [49] · Answer 1 · 2022-01-10T09:35:33+03:00

We are given the data ho equal to 704 feet and vo equal to 112 feet per second. We apply then kinematics equation: h = ho + vot - 1/2 gt2. Substituting to the given equation,
h = 704 + 112t - 1/2 * 32*t2when h is equal to zero,0 = 704 + 112t - 1/2 * 32*t2t is equal to 11 seconds