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Vikki [24]
2 years ago
8

Describe the ratio of kinetic energy and potential energy the skateboarder will have at each of the following points in her ride

. Also, explain how the mechanical energy changes throughout the ride if there are no non-conservative forces acting on the system.
- at the top of the ramp
- a quarter of the way down the ramp
- halfway down the ramp
- three-quarters of the way down the ramp
- at the bottom of the ramp

Be sure to support your response with evidence from the text.

Physics
1 answer:
amm18122 years ago
7 0

Answer:

no answer

Explanation:

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1400 units of momentum.

Explanation:

Using the formula p=mv. We can get the momentum using 70*20 =1400 units of momentum

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8 0
3 years ago
A uniform solid sphere has mass m= 7 kg and radius r= 0. 4 m. What is its moment of inertia about an axis tangent to its surface
lilavasa [31]

The moment of inertia of a uniform solid sphere is equal to 0.448 kgm^2.

<u>Given the following data:</u>

Mass of sphere = 7 kg.

Radius of sphere = 0.4 meter.

<h3>How to calculate moment of inertia.</h3>

Mathematically, the moment of inertia of a solid sphere is given by this formula:

I=\frac{2}{5} mr^2

<u>Where:</u>

  • I is the moment of inertia.
  • m is the mass.
  • r is the radius.

Substituting the given parameters into the formula, we have;

I=\frac{2}{5} \times 7 \times 0.4^2\\\\I=2.8 \times 0.16

I = 0.448 kgm^2.

Read more on inertia here: brainly.com/question/3406242

4 0
2 years ago
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