The answer is D. All of the above
When we draw a graph, we represent the Dependent Variable on the Y-axis and the Independent Variable on the X-axis. The graph is then named in the format "Y-variable vs X-variable". In this case Y-variable = mpg and X-variable = speed of car.
Independent Variable simply means that we can freely change that variable and observe how the Dependent Variable changes. So, here the speed of the car is being changed on a straight flat road and its effect on mpg is being studied.
For this one, you can use Pythagorean theorem.
a^2 + b^2 = c^2 -------- c will be the resultant
(20 m/s)^2 + (30 m/s)^2 = c^2
solve for c.
= 36.1 m/s
Please brainliest me if this helped; trying to level up!
Answer:
C because air purifier is very essential in dusty homes .
Answer:
Explanation:
The trick is to find the time.
If the ball did not travel horizontally at all and was just dropped, how long would it take to hit the ground?
<em>Givens</em>
vi = 0
d = 1.2 m
a = 9.8 m/s^2
<em>Formula</em>
d = vi * t + 1/2 * a ^ t^2
<em>Solution</em>
1.2 = 0*t + 1/2 9.8 * t^2
1.2 = 4.9 t^2
t^2 = 1.2 / 4.9
t^2 = 0.245
sqrt(t^2) = sqrt(.245)
t = 0.4949 seconds
<em>Answer</em>
You are not very clear about which answer you want. There are two of them. One is going horizontally and the other is vertically.
<u>Vertical</u>
vf^2 = vi^2 + 2*a*d
vi = 0
a = 9.8
t = 0.4949
vf^2 =0^2 + 2 * 9.8 * 1.2
vf^2 = 23.52
sqrt(vf^2) = sqrt(23.52)
vf = 4.85 m/s
<u>Horizontal</u>
This is likely what you are looking for.
There is 0 acceleration horizontally.
d = 13.5 m
t = 0.4949
s = ?
s = d/t
s = 13.5/0.4949
s = 27.28
<em>Note</em>
You should note a couple of things.
- The horizontal and vertical speeds are not the same.
- The time is used for both the horizontal and vertical speeds.
- The horizontal and vertical distances are quite different.
- Horizontal accelerations for these type of questions is generally 0.
I think it’s 15cm
Might be 7cm
