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Scott Foresman Science Grade 6 Chapter 15
Terms in this set (23)
Is a push or pull on an object.
What is Force?
They are measured in units called newtons (N).
What is the measuring unit of Force?
It causes no change in motion, even if an object is moving. If all the forces acting on an object are same, the motion of the object doesn't change.
How do balanced forces affect the motion of an object?
Is the force that resists the movement of one surface past another. It is also the force against the force of a moving object.
Rolling Friction, Sliding Friction, Static Friction
What are the types of Friction?
Resists the motion of a moving object.
What is Rolling Friction?
Resists the motion of a sliding object.
What is Sliding Friction?
Resists the motion of an object just as it begins to move.
What is Static Friction?
Is the force of attraction between any object and every other object in the universe.
What is Gravitational Force?
It depends on the distance between two objects. If the distance between two object increases, the gravitational pull between them decreases.
What does Newton realised about Gravitational Force?
Is a measure of how fast an object is moving.
What is Speed?
What is the formula for calculating speed?
Is the speed of an object in a particular direction.
What is Velocity?
Change in either speed or direction.
What causes change in Velocity?
Is the rate at which velocity changes.
What is Acceleration?
An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line, unless acted on by an unbalanced force.
What is Newton's First Law of Motion?
An object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line, unless acted on by an unbalanced force.
What is Inertia?
The acceleration of an object depends on the mass of the object and the size of the net force applied.
What is Newton's Second Law of Motion?
What is the formula for Newton's Second Law of Motion?
How can acceleration be calculated?
When a force is applied to an object, the object exerts an equal force in the opposite direction.
What is Newton's Third Law of Motion?
It can be used to find the force needed to stop a moving object.
What is Momentum?
An object's speed at any moment.
What is Instantaneous Speed?
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