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Biblioteka

More Conservation of Energy

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Posljednje ažuriranje over 5 years ago
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Pitanje 1
1.

A: ME at point 1?

Pitanje 2
2.

B: KE at point 2?

Pitanje 3
3.

C: ME at point 2?

Pitanje 4
4.

D: KE at point 3? (Think! Does point 3 have any height?)

Pitanje 5
5.

E: ME at point 3?

Pitanje 6
6.

A 1.8 kg book has been dropped from a shelf. Its speed is 3.7 m/s when it is 1.3 m above the ground. What is its mechanical energy at this point?

Pitanje 7
7.

A 24 kg child is on a swing traveling at 7.8 m/s. What will be the height of the swing at the highest point?

Pitanje 8
8.

A 500 kg roller coaster starts from rest at the top of a 60 m hill. What is its speed at the bottom of the hill? (number only rounded to nearest tenth ex: 76.3)

Pitanje 9
9.

Yareli has 2000 J of potential energy when she is standing still on a diving board. What is her mechanical energy at this point?

Pitanje 10
10.

The potential energy at the top of a cliff equals the kinetic energy at the ground level.