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21 Cards in this Set
- Front
- Back
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Define displacement
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How far the object is from its starting point. Has both magnitude and direction
=x2-x1 |
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When a vector is pointing to the right its displacement is?
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positive
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When a vector is pointing to the left its displacement is?
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negative
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What is average speed?
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The total distance traveled along its path divided by the time it takes to travel this distance.
Distance/time |
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What is velocity?
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Magnitude of how fast an object is moving and direction.
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What is average velocity?
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Equals displacement/time elapsed or
x2-x1/t2-t1 |
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What is a vector?
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Has magnitude and direction
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Average velocity is also the?
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slope of the secant line
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What is instantaneous velocity?
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Slope of the tangent line to the distance vs. time graph
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When is the velocity constant?
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When the distance vs. time graph is a straight line.
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What is acceleration?
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Rate at which velocity changes. Change in velcoty/ change in time
Particle can change its magnitude of velocity or direction or both. |
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What is the kinematic equation for velocity?
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v=vo+at
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What is the kinematic equation for distance?
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x=x0+v0t+1/2atsquared
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What is the kinematic equation for average velcity?
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Vavg=V+V0/2
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What is the kinematic equation for vsquared?
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vsquar=v0squared+2a(x-xo)
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What is the acceleration due to gravity?
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-9.80
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How do you add vectors?
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R=Square root of (x2+y2)
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How can one find the opposite/y?
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Sin(theta)=y/R
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How can one find the adjacent angle/x?
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cos(theta)=X/R
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How can one find theta?
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tan(theta)=y/x
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The equation for vertical displacement is?
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Y=1/2gtsquared
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