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| The study of matter and energy and their relationships |
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| If you were to lift two equally heavy loads of laundry up a flight of stairs, how much work do you do compared to lifting just one load of laundry up two flights of stairs? |
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| Potential energy is the energy an object has because of its... |
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| A quantity that has Magnitude and Direction |
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| What are 3 possible units for speed? |
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| Miles per hour, light years per century, kilometer per hour |
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| In the absence of air resistance, objects fall at a constant _______ |
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| What is an objects instantaneous speed at the top of a vertical projectile's path? |
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| How fast does a free falling object fall after 9 seconds? |
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| If you drop a hammer and a piece of paper in a vacuum, which will hit the ground first? |
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| Both will both hit it at the same time |
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| An objects tendency to stay in motion or at rest |
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| T or F: An object on Earth will weigh less on the Moon |
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| True. Mass or Volume would say the same |
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| T or F: Friction always works against an objects motion |
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| An object that is going in a straight line and has a constant speed has zero _______ |
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| An object in motion will stay in motion unless acted upon by an outside force. Also known as the Law of Inertia |
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| Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object). |
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| For every action, there is an equal or opposite reaction |
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| The central science. The study of matter and their tranformations |
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| Magnetic field goes into this pole of a magnet. |
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| The magnetic field exits this pole of a magnet. |
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| Electrical unit to measure potential difference. |
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| The electric unit to measure current. |
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| The electrical unit to measure resistance. |
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| Electric Circuit contains what four basic parts? |
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| A electrical unit that contains a battery (source), wires (path), load (light or resistor), and control(a switch). |
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| Electric circuit with only one path. |
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| An electric circuit with more than one path. |
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| The study of motion: position, speed, velocity, and acceleration. |
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| Find the speed of a car if it travels 30 meters in 5 seconds |
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| Find the acceleration if the velocity changes from 20 m/s to 40 m/s in 2 seconds. |
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| An inclines plane has a rise or 2.0 meters and a run of 10 meters. What would be the theoretical acceleration down this incline without friction? |
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a = 10 m/s/s * rise/run
so a = 2 m/s/s |
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| If a 200 g cardboard car were traveling down an incline with a rise of 2.0 meters and a run of 10 meters, and its acceleration is only 1.5 m/s/s, what would the frictional force experienced down the incline? |
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| 2.0 m/s/s - 1.5 m/s/s gives a difference of 0.5 m/s/s reduction by friction therefore the frictional force must have been F = ma of .2 kg * 0.5 m/s/s or .010 N ! |
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