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Welcome to Physics 121!
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LAB 1 OBJECTIVES

• Discover how to use the motion detector
• Explore how various motions are represented on a
  position-time graph
• Explore how various motions are represented on a
  velocity-time graph
• Discover the relationship between position-time
  and velocity-time graphs
• Begin to explore acceleration-time graphs

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The graph below shows the velocity of a fish over
time. Sketch a graph of the fishs position
versus time. Describe the fishs motion in words.
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A car is driving at 35 m/s when it slams on its
brakes, skidding and coming to a stop in 5.0
seconds. a. Draw a motion diagram for this motion
showing velocity and acceleration vectors b.
Graph position, velocity and acceleration versus
time.
c. Calculate the cars acceleration. d. How long
will the skid marks be?
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When jumping, a flea reaches a takeoff speed of
1.0 m/s over a distance of 0.50 mm. What is the
fleas acceleration during the jump phase?
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When jumping, a flea reaches a takeoff speed of
1.0 m/s over a distance of 0.50 mm. How long
does the acceleration phase last?
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When jumping, a flea reaches a takeoff speed of
1.0 m/s over a distance of 0.50 mm. If the flea
jumps straight up, how high will it go? (Ignore
air resistance here in reality air resistance
does play a role and the flea does not really go
this high)
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