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Published byMillicent Washington Modified over 9 years ago
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Mrs. Larm
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Motion is when its distance from another stationary object is changing Using a reference point Describing distance Measurement are in ____________________.
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Formula is ______________________ Constant speed: same speed Average speed: changing speeds total distance / total time
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Velocity is speed and direction Examples
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Graphs (x,y) Slope: y ₂ - y₁/ x₂ - x₁ Slope intercept form: y = mx + b m= slope b = y intercept x = linear line x ² = U shaped curved line (parabola)
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Why do you need a reference point to know if an object is moving? What is the difference between an object’s speed and an object’s velocity? The bamboo plant grows 15 cm in 4 hours. At what average speed does the plant grow
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Times (s)Baby Sarah distance (m) Baby Scott distance (m) 000 10.50.4 210.8 31.51.2 421.6 What is each baby’s speed?
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Distance = speed x time
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Acceleration: increasing speed, decreasing speed, or changing direction Calculating acceleration: Acceleration= final velocity – initial velocity/ time Time is squared m/s ² An eagle accelerated from 15m/s to 22m/s in 4 seconds. What is the eagles average acceleration?
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Linear means Example Nonlinear means Example
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Unbalanced force: acting forces are unequal and will cause the object to move. Balanced forces: All forces are equal and the object will not change its motion or nonmotion
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That an object at rest will remain at rest and an object that is moving at a constant velocity will continue moving unless acted upon by an unbalanced force. Inertia: is the tendency of an object to resist change in motion. Mass: is the amount of matter in an object.
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The net force on an object is equal to the product of its acceleration and its mass Force( newtons) = mass x acceleration Acceleration = force / mass
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States that if one object exerts a force on another object, then the second object exerts a force of equal magnitude in the opposite direction on the first object
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Friction acts in the opposite direction of motion Two factors: Type of surface How hard the surfaces are push together (weight)
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Momentum = mass x velocity
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Two moving objects: transfer of speed from the last object to the first object One moving object: transfer of speed from a moving object to a stopped object which causes it to move a rate of the moving object Two connected object: share the speed
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