3 years ago

What natural phenomena could serve as alternative time standards?

Physics

1 answer:

KonstantinChe [14]3 years ago

4 0

Answer:

Explanation:

radioactive decay, planetary orbit, speed of light, etc.

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2 years ago

A skier leaves the horizontal end of a ramp with a velocity of 31.0 m/s and lands 156.3 m from the base of a ramp how high is th

BartSMP [9]

Answer:

The height of ramp = 124.694 m

Explanation:

Using second equation of motion,

$s = ut + \frac{1}{2}at^2$

From the question,

u = 31 m/s; s = 156.3 m, a=0

substituting values

$156.3 = 31\times t + 0$

t = $\frac{156.3}{31 }$

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t = 5.042 s; initial velocity, u =0

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Substituting in $h = ut + \frac{1}{2}gt^2$

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h = 124.694 m

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3 years ago

A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. its speed is 40 m/s when i

Alenkinab [10]

Given that,

Initial velocity , Vi = 0

Final velocity , Vf = 40 m/s

Acceleration due to gravity , a = 9.81 m/s²

Distance can be calculated as,

2as = Vf² - Vi²

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For half height, that is, s = 40.77m

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2 * 9.81 * 40.77 = Vf² - 0²

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