3 years ago

PLEASE HELPPPPPPPPPPPPPP

Physics

1 answer:

MrRa [10]3 years ago

7 0

Your answer is c hope I helped

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give three examples from the device on the apply page where potential energy was converted to kinetic energy

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A roller coaster needs to climb a tall hill. How tall of a hill can it climb with an initial

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Answer:

h = 11.25m

Explanation:

mgh = 1/2mv2

gh = 1/2v2

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4 years ago

Will Upvote!!!

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4 years ago

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An apple falls out of a tree from a height of 2.3m. what is the impact speed of the apple

Anuta_ua [19.1K]

Answer:6.71 m/s

Explanation:

Given

Apple fall from a height of $h=2.3 m$

We need to find the impact speed of apple which can be given by using

$v^2-u^2=2gh$

where v=final velocity

u=initial velocity

h=Displacement

Assuming initial velocity to be zero

substituting the value we get

$v^2-0=2\times 9.8\times 2.3$

$v=\sqrt{2\times 9.8\times 2.3}$

$v=6.71\ m/s$

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3 years ago