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21 Cards in this Set
- Front
- Back
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how can a force change motion ?
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by changing an objects direction
speed or both (change the velocity) |
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only what kind of what forces can change an objects velocity?
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only unbalaned forces
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examples of unbalanced forces changing an objects velocity
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what happens if an unbalanced force is applied to an object at rest ?
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the object will move in the direction of the net force
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example of an unbalanced force acting on an object at rest
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what happens when the net force acts in the same direction of a moving object ?
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the object will speed up
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what happens when the net force acting on a moving object is in the opposite direction that the object is moving ?
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the object will slow down
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example of when an object speeds up because net force acts in the same direction of the object
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example of when the net force acting on an object is in the opposite direction of the object causes it to slow down
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example of how can unbalnaced forces change the direction of an object ?
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rail applies applies an unbalanced force on the ball therefore the ball changes direction
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what do unblanced forces change and cause ?
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change velocity
cause acceleration |
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what is another term for a change in velocity?
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acceleration
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what is Newton's second law of motion
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the acceleration (change in velocity) is equal to the net force acting on the object divided by the objects mass
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Newton's second law equation
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examples of newtons second law equation
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what is circular motion
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any motion in which an object is moving along a curved circlular path
(moving in a circle) |
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what is centripedal force?
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a force, in circular motion, that acts perpendicular to the direction of motion, toward the center of the curve
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example of centripedal force
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what is a satellite
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any object that orbits a larger object
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why do satellites exhibit centripadel force?
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because they have circular motion
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what does gravity act as when the moon is a satellite?
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as a centripedal force
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