3 years ago

Where does friction oppose motion in a roller coaster car

1 answer:

7 0

In roller coasters, friction is a force that opposes motion and significantly slows the cars as they move on the track.<span> While it is easy to believe that friction is bad for the ride, it is one of the forces engineers consider in ensuring passengers have a safe ride</span>

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When you push a child on a swing, you are doing work on the child because _____.

max2010maxim [7]

ur answer is A or also known as

When you push a child on a swing, you are doing work on the child because you are pushing against the force of gravity

hope this helps :)

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3 years ago

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What can you predict about an element from its position in the periodic table

bazaltina [42]

Based on its position in the periodic table, you can predict how many electrons it has, how many valence electrons, how many levels of electrons, and its atomic number and mass.

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3 years ago

A ball is dropped from a height of 20 meters. At what helght does the ball have a velocity of 10 meters/second?

Sunny_sXe [5.5K]

Answer:

5.10 meters.

Explanation:

v²=u²+2gh

or, (10)²=(0)²+2×9.8×h

or, 19.6h=100

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Hope, this helps you.

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2 years ago

How does the digestive system help the muscular system?

Sveta_85 [38]

Answer:

I would say the answer is A... but I'm not so sure ....

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2 years ago

If a coin has a mass of 29.34g and drops from a height of 14.7 meters, what is its loss in gravitational potential energy? Show

Serga [27]

$U= mgh$
$U=((29.34/1000)kg)(9.81 \frac{m}{s^{2} } )(14.7m)=4.321J$

do not forget to change grams to kilograms and if it were in centimeters convert them to meters.

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3 years ago