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storchak [24]
3 years ago
12

Susan and Hannah are each riding a swing. Susan has a mass of 25 kilograms, and Hannah has a mass of 30 kilograms. Susan’s swing

moves with a velocity of 10 meters/second, while Hannah’s swing moves with a velocity of 8.5 meters/second. Susan’s kinetic energy( 1080 , 1250 ,1350,or 1500) is joules. Susan’s kinetic energy is greater than Hannah’s because ( the speed is a greater effect than mass, mass has a greater than speed , mass and speed have same effect or mass & speed does'nt have any effect .
Physics
2 answers:
kramer3 years ago
7 0

I just took the test for plato, the answers are 1250 and speed has a greater effect than mass


Sphinxa [80]3 years ago
4 0
Speed has a greater effect than mass
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As per Bernuolli's Theorem total energy per unit mass is given as

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now from above equation

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\frac{4390}{0.999*10^3} + \frac{1}{2}*(7.22*10^{-4})^2 + 9.8*23.6 = E

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Part B)

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3 years ago
To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a sp
motikmotik

Answer:

0.79 s

Explanation:

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3 years ago
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Answer:

The strong person should carry the ladder at the  front end and the weak person should carry it at the back end.

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this is because in such a case the strong person has to pull the ladder whereas the weak person at the back end have to push the ladder. In such case it is easier to push because the weak person can use the force of gravity of his own body for pushing the ladde.

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