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yKpoI14uk [10]
3 years ago
12

A marble is thrown horizontally with a speed of 15.0 m/s from the top of a building. When it strikes the ground, the marble has

a velocity that makes an angle of 65.0° with the horizontal. From what height above the ground the marble was thrown. How far from the base of the building, did the marble land?
Physics
2 answers:
alina1380 [7]3 years ago
8 0
The answer for this question is 52.79
jolli1 [7]3 years ago
3 0
The answer is 52.79 m.

I used this formula to get the formula for Vy:
v^2=vi^2+2(a)(x)
And got
Vy=square root (19.6 h)

Then I used that and put it in this formula:

tan(65) =Vy/Vx

tan(65) = square root (19.6 h)/15.0

Then I rearranged it to:

h=[(15.0)(tan65)]/19.6

h=52.79 m
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In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how large wou
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Answer:

size of popcorn seed may meet the scaled earth size of x = 0.07312 in.  

Explanation:

Given:-

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Find:-

How large would be the earth model

Solution:-

- We can use the actual diameters of the earth and sun to develop the ratio of earth diameter to that of sun. The direct ratio can be used to model the diameter of earth for the scale model

                                          Sun                   Earth

                     Actual :     1392700 km     12,742 km

                      Scale :           8 in                    x

- Use direct relations and solve for x:

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                              x = 0.07312 in.

- From the given options apple, grapefruit and marble diameters are larger than 1 inch. So only the size of popcorn seed may meet the scaled earth size of x = 0.07312 in.  

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3 years ago
Read 2 more answers
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