Physics Newton's Second Law Quiz

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Questions and Answers

What is the cause of acceleration?

A net force not zero

What is a combination of all the forces that act on an object?

Net force

Forces of 14N and 6N in the same direction act on an object. What is the net force on the object?

20N

If the forces on an object are 3N in one direction and 15N in the opposite direction, what is the net force exerted on the object?

12N Signup and view all the answers

If the force on an object doubles, then the acceleration will?

Double Signup and view all the answers

To find the net force on an object when two or more forces are pushing or pulling in opposite directions, you must?

Subtract Signup and view all the answers

To find the net force of an object when two or more forces are pushing or pulling in the same direction, you must?

Add Signup and view all the answers

Twice as much mass = _____ the acceleration

1/2 Signup and view all the answers

If the net force of an object doubles, then the acceleration _____________

doubles Signup and view all the answers

If the mass of an object doubles, the acceleration is _____

halved Signup and view all the answers

If mass and force both double then the acceleration is _____

unchanged Signup and view all the answers

What happens to acceleration if a load is added to the cart so that its mass is doubled?

Acceleration is halved Signup and view all the answers

What is a force that always acts in a direction to oppose motion?

Friction Signup and view all the answers

If you push something to the right, the friction always goes to the?

Left Signup and view all the answers

What is acceleration?

A change in the motion of an object. Signup and view all the answers

What kind of relationship exists when one variable increases and the other also increases?

Direct relationship Signup and view all the answers

What kind of relationship occurs when one variable increases and the other decreases?

Inverse relationship Signup and view all the answers

What does Newton's Second Law state?

A net force acting on an object produces an acceleration that is directly proportional to the net force and inversely proportional to the mass. Signup and view all the answers

What is the relationship between mass and acceleration?

Mass is always inversely proportional to acceleration. Mass goes up, acceleration goes down. Signup and view all the answers

What is the relationship between net force and acceleration?

Net force is always directly proportional to acceleration. Force goes up, acceleration goes up. Signup and view all the answers

What is net force?

The sum of all forces acting on an object. Signup and view all the answers

What happens to net force and acceleration at constant velocity?

Both will be zero. Signup and view all the answers

What type of force is friction?

Resistive force that acts against motion. Signup and view all the answers

What happens to forces in the same direction?

They are added together. Signup and view all the answers

What happens to forces in opposite directions?

They are subtracted from one another. Signup and view all the answers

What is force?

A push or pull that can change the motion of an object. Signup and view all the answers

What is energy?

The ability to cause change. Signup and view all the answers

In the diagram which one has the forces balanced?

A Signup and view all the answers

In the diagram which one could be traveling at a constant speed?

C Signup and view all the answers

Which of these could be slowing down? (Select all that apply)

E Signup and view all the answers

Study Notes

Newton's Second Law Concepts

Acceleration is caused by a net force that is not zero.
Net force is the combination of all forces acting on an object.
When forces of 14N and 6N act in the same direction, the net force is 20N.
If forces of 3N and 15N act in opposite directions, the net force is 12N.
Doubling the force on an object results in doubled acceleration.
To find the net force when forces act in opposite directions, subtract the smaller force from the larger one.
When forces act in the same direction, add their magnitudes to determine the net force.

Mass and Acceleration Relationships

Doubling the mass of an object halves its acceleration.
If the net force on an object doubles, the acceleration also doubles.
An increase in mass inversely affects acceleration; if mass increases, acceleration decreases, and vice versa.
If both mass and force double, acceleration remains unchanged.
If a load is added to a cart doubling its mass, the acceleration is halved.

Force Dynamics

Friction is a force that opposes motion and acts in the opposite direction of applied force.
When pushing something to the right, friction acts to the left.
Acceleration signifies a change in the motion of an object.

Relationship Principle

A direct relationship means if one variable increases, the other does too; if one decreases, both decrease.
An inverse relationship indicates that an increase in one variable leads to a decrease in another.

Newton's Second Law Definition

Newton's Second Law states that the net force acting on an object produces an acceleration that is directly proportional to the net force and inversely proportional to the object's mass.

Force and Motion

Net force is the sum of all forces acting on an object.
Both net force and acceleration are zero when the object moves at a constant velocity.
Friction is a resistive force resulting from surface interaction and always opposes motion.

Analyzing Forces

Forces acting in the same direction are added together.
Forces acting in opposite directions are subtracted from one another.
A force is defined as a push or pull that can change an object's motion.
Energy describes the ability to cause change.

Diagrams and Object States

In diagrams, identify where forces are balanced and where objects may be traveling at constant speed or slowing down.

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Test your knowledge on Newton's Second Law of Motion with these flashcards. Each card covers important concepts such as net force and acceleration causes. Enhance your understanding of how forces interact and impact movement.