I think that it is 0.035 or 3/100
-5.8c + 4.2 - 3.1 + 1.4c = -4.4c +1.1
Hope this helps! Ask me any questions if needed :)
Here is the answer to your problem:
<h3><u>https://brainly.in/question/10886862</u></h3>
When the penny hits the ground, h will = 0.
So: Set h(t) = 0 = -4.9t^2 + 0t + 150 m
Then 4.9t^2 = 150, and so t^2 = sqrt(150 / 4.9) = plus or minus 5.53 sec.
We can use only the positive root, as we're measuring time.
t = 5.5 sec (answer)