Answer:
a = 1565217.39 ft / s ^ 2
t = 0.001725 seconds
Step-by-step explanation:
The first thing is to use the same system of units therefore we will pass the 28 inches to feet, like this:
28 in * (1 ft / 12 in) = 2.33 ft
Now yes, we can continue, we have the following data:
vi = 0
vf = 2700 ft / s
the equations in this case are as follows:
vf = vi + a * t
vf = a * t
rearranging for a
a = vf / t (1)
now with the position equation we know that:
x = vi * t + (a * t ^ 2) / 2
x = (a * t ^ 2) / 2 (2)
now replacing (1) in (2), we are left with:
x = (vf / t) * (t ^ 2) / 2
knowing that x would be 2.33 ft, which is when the cannonball exits the cannon.
2.33 = 2700 * t / 2
t = 2.33 * 2/2700 = 0.001725 seconds.
and now replace in (1)
a = vf / t = 2700 / 0.001725 = 1565217.39 ft / s ^ 2
Answer:
meters
Step-by-step explanation:
From the answer choices, we basically need to find which of them is between 
and 
<em>Converting all of them to decimals would make it really easier:</em>
<em />
<em>So we need to find number between -0.5 and -1.67</em>
<em />
<em>Answer choice A is -2.33</em>
<em>Answer choice B is -0.75</em>
<em>Answer choice C is -0.25</em>
<em>Answer chioce D is -1.83</em>
<em />
<em>So which number, from the choices, is between -0.5 & -1.67?</em>
Clearly, it is -0.75, or, meters
<em>i</em><em> </em><em>think</em><em> </em><em>it</em><em> </em><em>is</em><em><u> </u></em><em><u>8</u></em>
Step-by-step explanation:
hope this helps! ;)
