If an object is dropped from a height of 178 feet, the function h(t)=-16t^2+178 gives the height of the object after t seconds.

Question

3 years ago

13

When will the object hit the ground?
A. 6.67s
B. 3.34s
C. 13.34s
D. 1.67 s

1 answer:

svp [43] · Answer 1 · 2022-03-28T01:02:45+03:00

svp [43]3 years ago

4 0

Answer:

B. 3.34s

Step-by-step explanation:

Find t when the object hit the ground, h(t)=0.

h(t)=-16t²+178

0=-16t²+178

16t²=178

t²=11.125

t=√11.125=3.33541601603s