Answer:
it will take him 200secs to run to the shops
(btw 200 seconds is 3minutes and 20secs)
Explanation:
distance = speed x time
time = distance / speed
1200 ÷ 6 = 200
time = 200seconds
hope this helps
brainliest please?
x
Answer:
The ratio of the speed of light in a vacuum to the speed of light in the material it is passing through
Explanation:
- Index of refraction also called refractive index is the ratio of the sine of angle of incidence to the sine of angle of refraction, this is according to the Snell's Law.
- <u>The value of index of refraction</u> may be calculated from the ratio of the speed of light in vacuum to the speed of light in a second medium of a greater density.
- Therefore,<em><u> refractive index refers to the speed of light in a vacuum divided by the speed of light in the medium.</u></em>
The answer is D. discrimination.<span />
Answer:
The answer to your question is
a) t = 2.55 s
b) t = 5.5 s
Explanation:
Data
vo = 25 m/s
h = 2 m
g = 9.81 m/s
Formula
t = -(vo)/g
a)
t = -(25)/9.81
t = 2.55 s
b)
Tt = 2t
Tt = 2(2.55)
Tt = 5.1 s
Time in the last 10 m
10 = 25t + (1/2)(9.81)t²
Simplify
10 = 25t 4.91t²
4.9t² + 25t - 10 = 0
Solve the equation using an online calculator
t₁ = 0.37 s t₂ = -5.47 s
The correct answer is t₁, t₂ is incorrect because there are no negative answers.
Total time = 5.1 + 0.37
= 5.5 s