Zusammenfassung der Ressource
Frage 1
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What can a force do?
Frage 2
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What is the unit of force?
Antworten
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Pascal, Pa
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Newton, N
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Siemens, S
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Becquerel, Bq
Frage 3
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True or false? Every force has an equal and opposite force.
Frage 4
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True or false? The resultant force is the product of all forces acting upon an object.
Frage 5
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Which of these situations could occur if the resultant force was zero?
Antworten
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The object would remain stationary
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The object would accelerate
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The object would decelerate
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The object would move at constant speed
Frage 6
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Which of these situations could occur if the resultant force was not zero?
Antworten
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The object would remain stationary
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The object would accelerate
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The object would decelerate
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The object would move at constant speed
Frage 7
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How many laws of motion did Newton create?
Frage 8
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True or false? Force, mass and acceleration are linked by the equation F = ma.
Frage 9
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What could you do to increase the acceleration of an object?
Antworten
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Increase the force
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Decrease the force
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Increase the mass
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Decrease the mass
Frage 10
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True or false? The thinking distance is the sum of the stopping distance and the braking distance.
Frage 11
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Which factors increase thinking distance?
Frage 12
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Which factors increase braking distance?
Frage 13
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True or false? The gravitational field strength on Earth is roughly 100N/kg.
Frage 14
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What force is exerted on objects falling in a fluid?
Antworten
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Fluid force
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Friction
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Drag force
Frage 15
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What is the terminal velocity of an object?
Antworten
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The speed of an object just before it lands on the ground
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The speed of an object which is guaranteed to damage it or kill it (if it is alive)
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The speed of an object at which weight and drag force are balanced
Frage 16
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True or false? An elastic object stays permanently deformed, even when the forces deforming it are removed.
Frage 17
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True or false? Hooke's law states that the extension of a spring is directly proportional to the force applied, providing that the limit of proportionality is not exceeded.
Frage 18
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What does k stand for in F = ke?
Antworten
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Force applied, N
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Extension, m
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Spring constant, N/m
Frage 19
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True or false? Using a wind deflector increases the amount of fuel needed.
Frage 20
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True or false? Speed cameras measure the time it takes for a car to travel over a set distance and then the speed is calculated.