301985
Questão 1
Questão
What is the kinetic energy formula?
Responda
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KE=1/2∙m∙v²
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KE=m∙g∙h
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KE=m∙g
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KE=m∙v²
Questão 2
Questão
What is the potential energy formula?
Responda
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PE=1/2∙m∙v²
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PE=m∙g∙h
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PE=m∙g
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PE=m∙v²
Questão 3
Questão
On earth, the acceleration of a free-falling object would be ___. However, in this quiz not all the questions have this as the acceleration.
Responda
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9.8
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1
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5
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9.8²
Questão 4
Questão
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand at a speed of 30 m/s. What is the amount of energy the object has?
Responda
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KE=945 joules
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KE=1890 joules
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KE=2958 joules
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KE=623 joules
Questão 5
Questão
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 kg and accelerates at 6 m/s. What is the amount of energy the object has?
Responda
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PE=498 joules
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PE=564 joules
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PE=42 joules
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PE=1512 joules
Questão 6
Questão
A car is traveling with a velocity of 40 m/s. If the kinetic energy is 73,600 joules, what is the mass of the object?
Responda
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13,121 kg
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36 kg
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102 kg
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92 kg
Questão 7
Questão
A 99 kg cinder block is sitting on a platform 20 m high with an acceleration of 15 m/s. What is the amount of energy the object has?
Responda
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KE=36,000 joules
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KE=297,000 joules
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KE=154,000 joules
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KE=3,000,000 joules
Questão 8
Questão
Acceleration= 6, Mass= 145, and Height= 21 m. What is the amount of energy the object has?
Responda
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12,870 joules
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71,800 joules
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18,270 joules
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80,271 joules
Questão 9
Questão
Gravitational Potential Energy-__________________________.
Responda
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Energy of motion
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Energy depending on vertical position (mass & height)
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Energy stored in stretchy materials
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Energy stored that measures amount of moving particles in a object
Questão 10
Questão
Elastic Potential Energy- _____________________.
Responda
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Energy of motion
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Energy depending on vertical position (mass & height)
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Energy stored in stretchy materials
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Energy stored that measures amount of moving particles in a object
Questão 11
Questão
Kinetic Energy- _________________.
Responda
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Energy of motion
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Energy depending on vertical position (mass & height)
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Energy stored in stretchy materials
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Energy stored that measures amount of moving particles in a object
Questão 12
Questão
Select each of the situations that involves kinetic energy.
Responda
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Ball being dropped
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Sledding
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Airplane going to land
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Swinging
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Bow and arrow
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Triggering a gun
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Diver diving
Questão 13
Questão
Select the following situations that use gravitational energy.
Responda
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Ball being dropped
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Sledding
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Airplane going to land
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Diver diving
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Swinging
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Bow and arrow
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Triggering a gun
Questão 14
Questão
Select the following situations that use elastic potential energy.
Responda
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Ball being dropped
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Sledding
-
Airplane going to land
-
Diver diving
-
Swinging
-
Bow and arrow
-
Triggering a gun
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