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Alika [10]
2 years ago
10

Study the image of the moving car.

Physics
2 answers:
Levart [38]2 years ago
8 0
While traveling downhill, the car’s potential is increasing and kinetic energy is decreasing
gayaneshka [121]2 years ago
6 0

Answer:

While traveling downhill, the car’s potential is <u>increasing</u> and kinetic energy is <u>decreasing</u>

Explanation:

hope this helps!

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A skateboarder jumps horizontally off the top of a staircase and lands at bottom of the stairs. The staircase has a horizontal l
e-lub [12.9K]

Answer:

The vertical velocity of the skater upon landing is 10.788 meters per second.

Explanation:

Skateboarder experiments a parabolic movement. As skateboarder jumps horizontally off the top of the staircase, it means that vertical component of initial velocity is zero and accelerates by gravity, the final vertical speed is calculated by the following expression:

v = v_{o} + g\cdot t

Where:

v_{o} - Initial vertical speed, measured in meters per second.

v - Final vertical speed, measured in meters per second.

g - Gravitational acceleration, measured in meters per square second.

t - Time, measured in seconds.

Given that v_{o} = 0\,\frac{m}{s}, g = -9.807\,\frac{m}{s^{2}} and t = 1.10\,s, the final velocity of the skater upon landing is:

v = 0\,\frac{m}{s} + \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (1.10\,s)

v = -10.788\,\frac{m}{s}

The vertical velocity of the skater upon landing is 10.788 meters per second.

3 0
3 years ago
Which best compares AC and DC?
Naily [24]
Yea im pretty sure its B
5 0
3 years ago
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HELP QUICK GIVING 16PTS!!!!!!! A student designs an experiment to test substances X, Y, and Z, to determine which one is a catal
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The test tube that first stops in bubbling or the production of a gas is the tube that contains the catalyst since the reaction ended faster than the others. A catalyst is known to speed up a reaction so it must the situation aforementioned is the answer.
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3 years ago
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Water is the only pure substance that exists as a liquid at normal Earth temperatures.
gladu [14]
Here are many things that exist as liquid at "normal" Earth temperatures. I would bet that you've seen a demonstration or someone use something with liquid mercury. 

<span>FALSE </span>

<span>Hope this helps.</span>
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Which scientist was the first to propose the heliocentric model of the universe
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Hi there! :D

Which scientist was the first to propose the heliocentric model of the universe


Copernicus
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3 years ago
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