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8 Cards in this Set
- Front
- Back
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The formula for displacement of an object is ______, and, in a graph, it is represented by pointing an arrow to the ________.
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Delta x= x_{2} - x_{1}
right |
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If x_{1} is 10 meters and x_{2} is 30.0 meters. what is the change in x?
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20.0 meters
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average speed=?
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distance traveled/ time elapsed
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Velocity is used to signify ________ and ________
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magnitude, direction
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average velocity=?
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displacement/ time elapsed= final position- initial position/ time elapsed
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average acceleration=?
formula would look like _________ |
change of velocity/ time elapsed
a= v_{2}-v_[1}/ t_{2} - t_{1} |
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The instantaneous acceleration, a, can be defined in analogy to instantaneous ________, for any specific instant: (?formula?)
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velocity
a=lim Delta v / Delta t Delta x->0 |
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A car accelerates along a straight road from rest to 75 km/h in 5.0 sec. What is the magnitude of its average acceleration?
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a= v_{2}-v_[1}/ t_{2} - t_{1}
=75 km/h - 0 km/h / 5.0 sec = 15 _km/h_ s (fifteen kilometers per hour per second) |
