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marissa [1.9K]
3 years ago
13

A car with mass 450 kg has a kinetic energy of 16,256 j. What is the speed of the car?

Physics
2 answers:
Lana71 [14]3 years ago
7 0

Answer:

Speed of the car is 8.49 m/s

Explanation:

It is given that,

Mass of the car, m = 450 kg

Kinetic energy of the car, E = 16256 J

We need to find the speed of the car. The kinetic energy of the car is given by :

E=\dfrac{1}{2}mv^2

v=\sqrt{\dfrac{2E}{m}}

v=\sqrt{\dfrac{2\times 16256\ J}{450\ kg}}

v = 8.49 m/s

So, the speed of the car is 8.49 m/s. Hence, this is the required solution.

Likurg_2 [28]3 years ago
5 0
E = 1/2 * m * v²

v = √(2 * E  / m)
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3 0
3 years ago
A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 90°F. What is its coefficient of line
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The coefficient of linear expansion, given that the length of the pipe increased by 1.5 cm is 1.67×10¯⁵ /°F

<h3>How to determine the coefficient of linear expansion</h3>

From the question given above, the following data were obtained

  • Original diameter (L₁) = 10 m
  • Change in length (∆L) = 1.5 cm = 1.5 / 100 = 0.015 m
  • Change in temperature (∆T) = 90 °F
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Learn more about coefficient of linear expansion:

brainly.com/question/28293570

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A cylinder has a height of 5.3 cm and a diameter of 3.0 cm. what is its volume?
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