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3 years ago

10

If an object is dropped from a tall building and hits the ground 3.0 s later, what is the velocity of the object when it hits th

e ground? (Remember that the velocity is downward)

1 answer:

dusya [7]3 years ago

6 0

Using the kinematic equation:

Vf=Vi+at then plug the values in.

Vi=0 m/s (Because the ball is dropped)

t=3 s.

a=9.81 m/s=g

Vf=0+3*9.81;

Vf=29.43 m/s

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<h3><u>Answer;</u></h3>

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<h3><u>Explanation;</u></h3>

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3 years ago

If you have two objects on the edge of a cliff, how can you determine which one has the most potential energy?

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3 years ago

Consider a roller coaster begins 15m above the ground. If the cart has a mass of 75kg, what is the velocity of the cart halfway

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Answer:

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Explanation:

Given that,

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2 years ago