An object is dropped from a bridge and allowed to freefall to the ground. The height of the object over time can be modeled usin

Question

slega [8]

3 years ago

6

An object is dropped from a bridge and allowed to freefall to the ground. The height of the object over time can be modeled usin

g h(t) = 144 – 16t2. How many seconds will it take the object to reach the ground? second(s)

Mathematics

2 answers:

stiks02 [169] · Answer 1 · 2022-08-23T15:07:26+03:00

stiks02 [169]3 years ago

5 0

Answer:

it's 3 (Three) second on edge

Step-by-step explanation:

ioda · Answer 2 · 2022-08-23T13:30:01+03:00

The height at time t is
h(t) = 144 - 16t²

When t = 0, then h = 144.
Therefore the height from the ground is 144 when the object is dropped.

When the object reaches the ground, h = 0.
Therefore
144 - 16t² = 0
t² = 144/16 = 9
t = 3 s

Answer:
The object reaches the ground in 3 seconds.