Actually the position function with respect to time under constant acceleration is:
a=g
v=⌠g dt
v=gt+vi
s=⌠v
s=gt^2/2+vit+si
So if vi and si are zero then you just have:
s=gt^2/2
Notice that it is not gt^2 but (g/2) t^2
So the first term in any quadratic is half of the acceleration times time squared because of how the integration works out...
Anyway....
sf=(a/2)t^2+vit+si
(sf-si)-vit=a(t^2)/2
2(sf-si)-2vit=at^2
a=(2(sf-si)-2vit)/t^2 and if si and vi equal zero
a=(2s)/t^2
Answer:
6/15 is probability
Step-by-step explanation:
Three marbles are red
two marbles are blue
four marbles are green
six marbles are yellow
total 15
blue marbles plus green is 6
6/15
D. Yes, Triangle ABC is a right triangle by the Pythagorean theorem.
Width: x
Length: 4+2x
Perimeter=x+x+4+2x+4+2x=6x+8
6x+8=98
x=15
Length=4+2(15)=34 feet
The correct answer is: [B]: " s² + 5s " .
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A = s(s+5) = s² + 5s ;
→ which is: Answer choice: [B] .
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