A pen drops from the top of a desk that is 4 feet tall. The distance from the pen to the ground can be modeled by the equation b

Question

3 years ago

14

A pen drops from the top of a desk that is 4 feet tall. The distance from the pen to the ground can be modeled by the equation b

elow, where h(t) is the height from the ground and t is the time in seconds, How long will it take for the pen to reach the ground? Round your answer to the nearest tenth of a second
h(t)=-16t^2+4

Mathematics

1 answer:

Tcecarenko [31] · Answer 1 · 2022-06-02T18:10:35+03:00

Tcecarenko [31]3 years ago

4 0

Answer:

0.5 seconds

Step-by-step explanation:

On the ground, height is 0

-16t² + 4 = 0

16t² = 4

t² = 4/16

t² = ¼

t = ½