3 years ago

Help please and thank you!

1 answer:

4 0

1. Answer is 20
2(18-8)
Distribute to get 36-16
Answer is 20

2. Answer is 26
A=4 which means 4+22 which gets you 26

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tigry1 [53]

Answer:

525

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rjkz [21]

Answer:

The kinetic energy is 20,000\ J

Step-by-step explanation:

The kinetic energy of a body is defined as:

$k = \frac{1}{2}ms ^ 2$

Where m is the mass of the roller coaster car

s is the speed and k is the kinetic energy

We know that $s = 20\ m/s$

$m = 100\ kg$

Then the kinetic energy of the roller coaster car is:

$k = \frac{1}{2}(100)(20) ^ 2\\\\k = 50(20) ^ 2\\\\k = 50 * 400\\\\k = 20,000\ J$

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vovangra [49]

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bekas [8.4K]

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