3 years ago

1200kg car speeds up from 2 m/s to 6 m/s. How many times greater is the car's kinetic

Physics

1 answer:

Bezzdna [24]3 years ago

3 0

Answer:

9 times as great

Explanation:

KE = 1/2mv²

1/2(1200)(2)² = 2,400 J
1/2(1200)(6)² = 21,600 J

21,600 / 2,400 = 9

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Answer:

Power will be 0.2023 watt

And when amplitude is halved then power will be 0.0505 watt

Explanation:

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A 10-kg dog is running with a speed of 5.0 m/s. what is the minimum work required to stop the dog in 2.40 s?

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