Questions and Answers
What principle is demonstrated when a fireman turns on his hose, water goes forward & he is knocked backwards?
Which law explains why it takes less force to move a DVD than a DVD player?
What law is demonstrated when you need to push a heavy ball harder to get it to move as fast as a small one?
Which law states that a soccer ball will not move until a player kicks it?
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Which law indicates that more force results in more acceleration?
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If air is let out of a balloon quickly, which law explains the balloon going up?
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Which law is represented when it takes less force to push a bike than a motorcycle?
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What does 'force = mass times acceleration' refer to?
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Which law states that an object in motion stays in motion unless acted on by an outside force?
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What does 'for every action there is an equal and opposite reaction' describe?
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Which principle explains how a bowling ball hits the pins sending them flying for a strike?
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Which law states that an object at rest stays at rest unless acted on by an outside force?
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What principle is demonstrated when feet push down on the floor and the floor pushes up at feet as you walk?
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What law is reflected by the fact that a 12 lb bowling ball goes faster down the lane than a 15 lb bowling ball?
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Which law explains why you feel pushed back into your seat during takeoff in a plane?
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What principle is illustrated when you push a large box and a small box with the same force, and the small box moves faster?
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Which law states that a seatbelt stops you from hitting the windshield if you hit the brakes quickly?
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What law describes why a boy can throw a football farther than his friend because he uses more force?
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Which law explains that when you push on a door it pushes back with equal and opposite force?
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Which law applies when someone crashes their bike into a rock and is thrown over it to the ground?
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What law is evident when pushing a baby on a swing is easier than pushing an adult?
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What principle explains why water spills from a glass carried by someone who is walking steadily and suddenly stops?
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When thrown with the same force, which law states that a soccer ball accelerates more than a bowling ball?
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What law is illustrated when a magician pulls a tablecloth out from under a dish on a table without disturbing the dish?
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What principle is shown when a boy gets out of a boat and as he moves forward the boat is pushed back?
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What law explains a rocket launching into outer space when fuel exhaust and fire go down?
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Which law states that a book rests on the top of a shelf and does not move until a student accidentally knocks it off?
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What concept is represented when the merry-go-round was going fast until 5 more kids got on?
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Study Notes
Newton's Laws of Motion
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Newton's 1st Law of Motion: An object remains at rest or in uniform motion unless acted upon by an external force. Examples include:
- A soccer ball will not move until kicked.
- Objects in motion stay in motion; e.g., a bowling ball hitting pins sends them flying.
- A baby in a swing requires external force to start moving.
- When walking steadily and suddenly stopping, water spills from a glass due to inertia.
- A magician can pull a tablecloth from under a dish without disturbing it due to inertia.
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Newton's 2nd Law of Motion: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is articulated by the formula: force = mass x acceleration. Examples include:
- Less force is needed to move lighter objects like a DVD compared to heavier ones like a DVD player.
- A heavier ball requires more force to achieve the same speed as a lighter ball.
- Pushing a bike is easier than pushing a motorcycle due to its lower mass.
- A 12 lb bowling ball rolls faster than a 15 lb bowling ball when thrown with the same force.
- When comparing two boxes pushed with the same force, the smaller box moves faster due to its lower mass.
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Newton's 3rd Law of Motion: For every action, there is an equal and opposite reaction. Examples include:
- A fireman pushing water forward with a hose experiences a backward reaction.
- When air is let out of a balloon, it pushes downwards and causes the balloon to rise.
- Pushing on a door results in the door exerting an equal force back.
- When someone jumps out of a boat, the boat moves in the opposite direction.
- A rocket launching upward uses the expulsion of exhaust gases downward to generate thrust.
Additional Examples
- Feeling pushed back into a seat during a plane takeoff exemplifies inertia (1st Law).
- A boy who throws a football farther due to applying more force illustrates the 2nd Law.
- A merry-go-round accelerating with additional weight highlights the balance of mass and force in motion (2nd Law).
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Description
This quiz provides a set of flashcards that illustrate Newton's Laws of Motion through real-world examples. Each card presents a scenario and the corresponding law, helping to reinforce understanding of these fundamental principles of physics.
