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3 years ago

3. A roller coaster car sits at rest at the top of a hill, 23.5 meters tall. What will be the final

Physics

1 answer:

Sloan [31]3 years ago

5 0

Answer:

21.5 m/s

Explanation:

KE at bottom = PE at top

½ mv² = mgh

v = √(2gh)

v = √(2 × 9.8 m/s² × 23.5 m)

v = 21.5 m/s

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3 years ago

By how much does the volume of an aluminum cube 4.00 cm on an edge increase when the cube is heated from 19.0°C to 67.0°C? The l

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