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Artemon [7]
2 years ago
8

1.What is the kinetic energy of a 394kg car moving at 15 m/s?

Physics
1 answer:
-BARSIC- [3]2 years ago
6 0

FORMULA:

  • K.E. = 1/2mv²

ANSWER:

We are given with mass of truck 95kg and K.E. truck 150,000J.

Plugging the respective value, by assuming velocity = v:

  • 150,000 = 1/2 × 95 × v²
  • 150,000 × 2/95 = v²
  • 3157.89 = v²
  • √3157.89 = v
  • 56.19m/s = v
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the winner of a 10km road race took half an hour to complete the race. Calculate the average speed. Give your answer in metres p
leonid [27]
Hello there!

For this:

1). Convert 10km to meters!
2). Convert the 30 minutes into seconds!

3). Use the following formula to solve for speed!

speed= distance/time

Note: The units should automatically work out to m/s. :)

My goal is to make sure you understand the problem, which is why I won't be giving you the answer. It'll be more work now, but less work in the future! :)

Hope this helped!

-------------


DISCLAIMER: I am not a professional tutor or have any professional background in your subject. Please do not copy my work down, as that will only make things harder for you in the long run. Take the time to really understand this, and it'll make future problems easier. I am human, and may make mistakes, despite my best efforts. Again, I possess no professional background in your subject, so anything you do with my help will be your responsibility. Thank you for reading this, and have a wonderful day/night!
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3 years ago
Help me with this???
Vikentia [17]

Yo sup??

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Therefore

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Hope this helps

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