Someone please help :(there is one example too, please show me your work

Physics

1 answer:

Vitek1552 [10]3 years ago

4 0

Answer:

1. 30 Kg.m/s

2. 20 m/s

Explanation:

Momentum is given as the product of velocity and mass, expressed by the formula p=mv where p represnt momentum in kgm/s, m represent the mass of an object in Kg and v represent the velocity in m/s. Note that for momentum, direction is critical. For the given case, since mass is given as 5kg and velocity as 6 m/s then we directly substitute to obtain momentum as p=5*6=30 kg.m/s

We still use the formula of momentum as p=mv but making v the subject of the formula then $v=\frac {p}{m}$ and substituting p with 24000 kg.m/s while m with 1200 kg we obtain that $v=\frac {24000}{1200}=20 m/s$

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Riders on a ferris wheel move in a circle with a speed of 4.0 m/s. As they go around, they

Vanyuwa [196]

Answer: D = 16m

Explanation: given values: a = 2 m/s2, v = 4 m/s
In this case we have to determine the diameter of the Ferris wheel.
Diameter of circle is given as: D = 2.r.
First we have to find radius of wheel. The best way to find that is using the centripetal acceleration equation: a = v2/r
Plug in values in above equation to find radius: 2 m/s2 = (4 m/s)2/r 2 m/s2 = (16 m2/s2)/r r = (16 m2/s2)/2 m/s2
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3 years ago

What effect or effects would be most significant if the Moon's orbital plane were exactly the same as the ecliptic plane?

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Answer:

c. Solar eclipses would be much more frequent.

Explanation:

The ecliptic plane is the apparent orbit that the sun describes around the earth (although it is the earth that orbits the sun), is the path the sun follows in earth's sky.

A solar eclipse occurs when the moon gets between the earth and the sun, so a shadow is cast on the earth because the light from the sun is blocked.

The reason why solar eclipses are not very frequent is because the moon's orbital plane is not in the same plane as the orbit of the earth around the sun, but rather that it is somewhat inclined with respect to it.

So if both orbits were aligned, the moon would interpose between the sun and the earth more frequently, producing more solar eclipses.

So, if the moon's orbital plane were exacly the same as the ecliptic plane solar eclipses would be more frequent.

the answer is: c.

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4 years ago

3. Specify the wrong sentences.

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Answer:

a: false

b: True

c: i dont know

Explanation: