week1-3

# week1-3 - To summarize the car's velocity information let...

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To summarize the car’s velocity information, let the horizontal axis represent time , and the vertical axis represent velocity . The velocity is constant wherever the slope of the distance-vs-time graph is constant. The velocity changes only when the distance graph’s slope changes.

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In the graph shown, is the velocity constant for any time interval? a) Yes, between 0 s and 2 s. b) Yes, between 2 s and 4 s. c) Yes, between 4 s and 8 s. d) Yes, between 0 s and 8 s. e) No, never.
A car moves along a straight road as shown. Does it ever go backward? a) Yes, between 0 s and 2 s. b) Yes, between 2 s and 4 s. c) Yes, between 4 s and 6 s. d) No, never.

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1/7/2011 4 V(m/s) t(sec) 6.0 0.0 10.0 How long a distance did this car go? The total distance 6.0 m/s X 10 s = 60 m
1/7/2011 5 V(m/s) t(sec) 6.0 0.0 10.0 How long a distance did this car go? In each slice, velocity is ~ constant. Add all slice up, one have the total distance The total distance is the area covered by the velocity .vs. time graph.

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distance traveled by the car the greatest? a) Between 0 s and 2 s. b) Between 2 s and 4 s. c)
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week1-3 - To summarize the car's velocity information let...

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