If this is regards to science and take off then <span>V1= Takeoff decision speed.
VR= Rotation speed. V2=Single engine climb speed. .</span>
Answer:
<h2><em><u>ᎪꪀsωꫀᏒ</u></em></h2>
➪-263
Step-by-step explanation:
-3x²-20
-3(-9)²-20
-3(81)-20
-243-20
-263
Answer:
$180.48
Step-by-step explanation:
225.60 * .8 = 180.48
Answer: 3.675 seconds
Step-by-step explanation:
Hi, when the object hits the ground, h=0:
h=−16t^2+48.6t+37.5
0=−16t^2+48.6t+37.5
We have to apply the quadratic formula:
For: ax2+ bx + c
x =[ -b ± √b²-4ac] /2a
Replacing with the values given:
a=-16 ; b=48.6; c=37.5
x =[ -(48.6) ± √(-48.6)²-4(-16)37.5] /2(-16)
x = [ -48.6 ± √ 4,761.96] /-32
x = [ -48.6 ± 69] /-32
Positive:
x = [ -48.6 + 69] /-32 = -0.6375
Negative:
x = [ -48.6 - 69] /-32 = 3.675 seconds (seconds can't be negative)
Feel free to ask for more if needed or if you did not understand something.
The answer to this problem is one because 1/3 3 times is 3/3 which is equal to one.
