Podcast
Questions and Answers
What term describes the property of matter that causes an object to resist changes in its state of motion?
What term describes the property of matter that causes an object to resist changes in its state of motion?
- the normal force
- friction
- tension
- inertia (correct)
When the net force on an object is increased, which of the following will also increase?
When the net force on an object is increased, which of the following will also increase?
- neither A nor B
- acceleration (correct)
- velocity
- both A and B
What is the SI unit for weight?
What is the SI unit for weight?
- pound
- kilogram
- Joule
- Newton (correct)
Which of Newton's Laws explains the jerking feeling when a vehicle stops suddenly?
Which of Newton's Laws explains the jerking feeling when a vehicle stops suddenly?
If the distance between two objects is halved, how does this affect their gravitational attraction?
If the distance between two objects is halved, how does this affect their gravitational attraction?
What is the direction of the normal force acting on a magnet sliding down a fridge door?
What is the direction of the normal force acting on a magnet sliding down a fridge door?
What will the magnitude of the normal force acting on a book be when a horizontal force is applied?
What will the magnitude of the normal force acting on a book be when a horizontal force is applied?
What is the nature of the force exerted by the table on the book?
What is the nature of the force exerted by the table on the book?
If an object is pushed at constant velocity, what can be said about the force of friction acting on it?
If an object is pushed at constant velocity, what can be said about the force of friction acting on it?
If a block weighing 4.0 N is in an elevator accelerating downward at 1.0 m/s², what is the tension in the string supporting it?
If a block weighing 4.0 N is in an elevator accelerating downward at 1.0 m/s², what is the tension in the string supporting it?
In a car moving backward at constant speed, how do fuzzy dice hanging from the rear-view mirror behave?
In a car moving backward at constant speed, how do fuzzy dice hanging from the rear-view mirror behave?
What is the primary design goal of running shoes concerning friction?
What is the primary design goal of running shoes concerning friction?
What happens to the sled's forces if the pulling rope is angled above the horizontal?
What happens to the sled's forces if the pulling rope is angled above the horizontal?
What is the acceleration of a 0.40-kg cart if a frictional force of 1.2 N opposes motion and it is attached to a 0.25-kg mass?
What is the acceleration of a 0.40-kg cart if a frictional force of 1.2 N opposes motion and it is attached to a 0.25-kg mass?
How far does a box of mass 15 kg travel before stopping if its initial speed is 4.2 m/s and the coefficient of kinetic friction is 0.30?
How far does a box of mass 15 kg travel before stopping if its initial speed is 4.2 m/s and the coefficient of kinetic friction is 0.30?
What is the acceleration of skater 1 if they push skater 2 with 70.0 N and both skaters are on ice with a coefficient of friction of 0.10?
What is the acceleration of skater 1 if they push skater 2 with 70.0 N and both skaters are on ice with a coefficient of friction of 0.10?
Flashcards
Inertia
Inertia
The property of matter that causes an object to resist changes in its state of motion. It is the tendency of an object to remain at rest or in motion at a constant velocity.
Acceleration
Acceleration
The rate of change of velocity. Acceleration is a vector quantity, meaning it has both magnitude and direction. It is measured in meters per second squared (m/s²).
Gravitational Force
Gravitational Force
The force of attraction between any two objects with mass. It is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Friction
Friction
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Newton's First Law of Motion
Newton's First Law of Motion
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Newton's Second Law of Motion
Newton's Second Law of Motion
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Newton's Third Law of Motion
Newton's Third Law of Motion
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Normal Force
Normal Force
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Tension in the string
Tension in the string
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Net Force
Net Force
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Weight
Weight
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Gravity
Gravity
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Coefficient of Friction
Coefficient of Friction
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Free Body Diagram (FBD)
Free Body Diagram (FBD)
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Study Notes
Multiple Choice Questions
- Inertia: The property of matter that resists changes in motion.
- Newton's Laws: Essential for understanding motion.
- Net Force Calculation: Calculating net force involves considering all forces acting on an object.
- Gravitational Attraction: Distance between objects affects the gravitational force.
- Normal Force Direction: The normal force is perpendicular to the surface it acts against.
- Force Application: Forces can affect motion, or no motion, in different ways as shown in examples.
Short Answer
- Free Body Diagrams (FBD): Visual representations of forces acting on an object.
- Force and Motion (Rope angle and more forces): Applying forces at angles or adding more forces changes the overall effect.
- Net Force and Motion Description: Net force describes acceleration. More information is needed to describe overall motion.
- Force Calculations: Calculations on friction and overall forces affecting accelerating object.
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