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.
Answer:
Luminol
Explanation:
is a chemical that exhibits chemiluminescence, with a blue glow, when mixed with an appropriate oxidizing agent.
Answer:
dynamo generator could be the right ans
D. all of the above
Explanation:
The best answer from the choices is option D all of the above.
Speed is a key component aspect of almost all sport.
What is speed:
Speed is the rate of change of distance with time;
Speed = 
distance is the path taken by a body
time is the duration of interval
In tennis, speed is very essential and critical same as soccer and swimming. In fact, sports with more speed have very good advantage at excelling.
learn more:
Speed brainly.com/question/10435836
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