Newton's Laws | Energy | Energy Conversions | GUTA Problems | Law of Conservation of Energy |
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An object at rest will remain at rest and an object in motion will remain in motion at a constant speed in a straight line unless acted upon by an unbalanced force
What is Newton's 1st Law?
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The ability to do work
What is the definition of energy?
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Stored chemical energy, electrical energy, thermal and light energy
What are the energy conversions in a simple circuit (a battery, wires, light bulb) starting with the battery?
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196 Joules
What is the GPE of a stone before it is dropped from a bridge if its mass is 2kg and the bridge is 10m high?
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Energy cannot be created or destroyed, it can only change form
What is the law of conservation of energy?
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force = mass x acceleration
What is Newton's 2nd Law?
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Stored energy in a stationary object
What is potential energy?
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Light to electrical
What are the energy conversions in a solar panel?
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100 Joules
What is the kinetic energy of a runner with a mass of 50kg that is running at a speed of 2m/s?
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GPE, KE, thermal energy, mechanical energy, magnetic energy, electrical energy
What different forms of energy are involved in the movement of a rollercoaster?
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For every action force there is an equal and opposite reaction force
What is Newton's 3rd Law?
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Energy associated with movement
What is kinetic energy?
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Stored chemical energy, electrical energy, light, sound and heat energy
What are the energy conversions in a battery operated alarm clock?
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6 Newtons
What is the force of a bat upon a baseball that has a mass of 0.5kg and an acceleration of 12m/s/s?
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The Joule
What is the unit that energy is measured in?
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The tendency of an object to remain at rest or remain in motion
What is the definition of Inertia?
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Potential Energy
What kind of energy does a person standing on a diving board have?
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Stored chemical energy, kinetic energy, mechanical energy, thermal energy
What are the energy conversions involved in riding a bicycle?
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50 km/hr
What is the velocity of a car that travels 100km in 2 hours?
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At its peak, it has the most potential energy, as it falls that energy is converted to kinetic energy. The pendulum has the greatest kinetic energy at the bottom of its swing. As it begins to move up the other side of its swing, the KE is converted back to GPE as it slows to a brief stop.
Describe the energy conversions of a pendulum from GPE to KE to GPE
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5N
What force is applied to a soccer ball with a mass of 0.5kg and an acceleration of 10m/s/s?
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Kinetic Energy
What kind of energy does a cart rolling down a hill have?
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Chemical potential energy, light and thermal energy
What are the energy conversions involved in burning wood?
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2m/s/s
What is the acceleration of a toy truck with a velocity of 6m/s over 3s?
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GPE
What kind of energy does a ball have before it falls back to Earth if it is thrown straight up?
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