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Katena32 [7]
3 years ago
12

Word or symbol used to describe how data was measured

Chemistry
1 answer:
Orlov [11]3 years ago
5 0

Answer:

Unit

Explanation:

Unit is used to describe how data is measured.

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Determine the kinetic energy of an 833.0 kg roller coaster car moving at a speed of 20.0 m/s
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Answer:

166,600J

Explanation:

Kinetic energy (K.E), which is the energy due to motion of a body, can be calculated by using the formula;

K.E = 1/2 × m × v²

Where;

K.E = kinetic energy (joules)

m = mass of body (kg)

v = speed or velocity (m/s)

According to this question, the mass of the roller coaster is 833.0 kg while its velocity/speed is 20.0m/s.

K.E = 1/2 × 833 × 20²

K.E = 1/2 × 833 × 400

K.E = 1/2 × 333200

K.E = 166,600

Therefore, the kinetic energy of the roller coaster car is 166,600J.

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