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20 Cards in this Set
- Front
- Back
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what is net force
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the combination of all the forces acting on an object
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how do you find the net force of objects acting in the same direction?
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find the sum of the 2 or more forces acting on the object and that'll equal the net force
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example of combining forces in the same direction
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what must you specify when you combine forces
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a reference direction because forces have direction
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how do you calculate the net force of forces acting on an object in opposite directions
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when 2 forces act in opposite directions you still add the forces together ( one force will be positive and the other will be negative)
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example of combining forces in opposite directions
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what is a balanced force
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a force acting on an object that combines and forms a net force of zero
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what effect do balanced forces have on an object
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doesn't make object move
doesn't change objects velocity |
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example of balanced forces
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what are unbalanced forces
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forces acting on an object that combine and form a net force that isn't zero
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example of unbalanced forces
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what is newtons first law of motion
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if the net force of an object is zero, the motion of the object does not change (an object at rest will stay at rest)
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if forces are balanced than there is no change in what
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velocity
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example of balanced forces and how they effect motion
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what happens when an unbalanced force acts on an object at rest ?
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object starts moving
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what happens when an unbalanced force acts on an object in motion?
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the objects speed
direction of motion or both change (velocity changes) |
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what is inertia
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the tendency of an object to resist a change in its motion
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example of inertia
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why do objects stop moving ?
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objects stop moving due to friction
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what would happen if there was no friction
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inertia would keep the object moving
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