sanafarghal
19.07.2019 •
Physics
Aball is tossed into the air from height of 8 feet with an initial velocity of 8 feet per second. find the time r(in seconds) it takes for the object to reach the ground by solving the equation -16t + 8t + 8 = 0 you trimmed a large strip of wallpaper from a scrap to fit into the corner of a wall you are wallpapering. you trimmed 15 inches from the length
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Ответ:
-16t + 8t + 8 = 0
The first thing we must do is rewrite the equation correctly.
We have then:
-16t ^ 2 + 8t + 8 = 0
Solving the polynomial we have:
t1 = -1/2
t2 = 1
We discard the negative root because we want to find the time.
it takes for the object to reach the ground about:
t = 1 second
Ответ:
no.9 indeed all matters are made out of atoms which is smaller than protons and neutrons