Mechanical Energy
Authored by Joel Mulder
Physics, Science
9th - 11th Grade
Used 16+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a person is standing still atop a hill, what is the formula for the person's mechanical energy?
Ep = Ek
Em = Ep
Em = Ek
Ek = Em + Ep
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for mechanical energy?
Ep = Ek + Em
Em = gv + (1/2)hm2
Em = Ek + Ek
Em = (1/2)mv2 + mgh
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When is kinetic energy at zero?
A ball speeds downhill at 12m/s
A ball gradually goes uphill at 3m/s
A ball comes to a complete stop at the bottom of the hill
A ball leaves the track flying upward at 2 m/s
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If 50N of force is used to push a bow string back 0.1m how much potential energy is stored in the string?
500J
5J
50J
2J
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
At the top of a hill a 20kg boulder has 1440J of potential energy what is the maximum speed it reaches at the bottom of the hill?
12m/s
10m/s
13m/s
6m/s
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the work done lifting an 60kg anvil to the top of a tower is 3600J, after being dropped, what is the kinetic energy of the anvil as it hits the ground?
60J
600J
3.6J
3600J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first law of thermodynamics?
Energy is not created or destroyed, it is conserved.
Not every conversion is 100%
Mechanical energy is always potential + kinetic energy
Lots of sugar = Lots of energy
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