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Which has greater kinetic energy, a car traveling at 30 m/s or a half-as-massive car traveling at 60 m/s?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
An arrow in a bow has 70 J of potential energy. Assuming no loss of energy to heat/friction, how much kinetic energy will it have after it has been shot?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
Which of the following is NOT an example of potential energy?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
How much power is required to do 40 J of work on an object in 5 seconds?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
How would the potential energy (with reference to the ground) of a ball sitting on a shelf change if you moved it to a higher shelf?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
Kinetic and potential are both forms of mechanical energy.
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
If velocity is doubled, kinetic energy would be doubled.
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
What is the ultimate source of energy for the food we eat?
60 m/s car
70 J
True
a moving car
Sunlight
False
potential energy would increase
8 W
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