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13 Cards in this Set
- Front
- Back
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Acceleration
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a ⃑ = vf – vi or a ⃑ = ∆v ⃑/t
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Speed
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Distance/Time
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Distance
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Speed * Time
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Time
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Distance/Speed
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Slope
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y2-y1/x2-x1
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Displacement
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Displacement is a vector measure of the interval between two locations measured along the shortest path connecting them
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Vector
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A quantity, such as velocity, completely specified by a magnitude and a direction.
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Scalar
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A quantity, such as mass, length, or speed, that is completely specified by its magnitude and has no direction.
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Velocity
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A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
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Formula for Displacement
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displacement = velocity x time
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A powerful hockey player can shoot a puck at 55 m/s. A skilled goalie has a reaction time of about 0.23 s. What is the maximum distance from the goal that the player can shoot so that the puck will reach the goal before the goalie can react to stop it?
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Displacement:
displacement = velocity x time |
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1. Calculate the acceleration of an Olympic runner who accelerates to a velocity of 13.5 m/s in 9.8s.
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a ⃑ = vf – vi or a ⃑ = ∆v ⃑/t
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12. A ball rolls for 6.8s and slows down from 12 m/s to 3.5m/s. Find its acceleration.
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a ⃑ = vf – vi or a ⃑ = ∆v ⃑/t
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