Review_Phys201_Summer07.pdf

# Review_Phys201_Summer07.pdf - Review Chapter 1 The distance...

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Review - Chapter 1 The distance d that a certain particle moves may be calculated from the expression d = at + bt 2 where a and b are constants; and t is the elapsed time. The dimensions of the quantities a and b are, respectively:

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Review - Chapter 1 A 2.5-m ladder leans against a wall and makes an angle with the wall of 32° as shown in the figure. What is the height h above the floor where the ladder makes contact with the wall? Ans: 2.12m
Review - Chapter 2 A bus leaves New York City, takes a non-direct route and arrives in St. Louis, Missouri 23 hours, 16 minutes later. If the distance between the two cities is 1250 km, what is the magnitude of the bus’ average velocity? Ans: 53.7km/h

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Review - Chapter 2 A ball is dropped from rest from a tower and strikes the ground 125 m below. Approximately how many seconds does it take the ball to strike the ground after being dropped? Neglect air resistance. Ans: 5.05 s
Review - Chapter 2 An object is moving along a straight line in the positive x direction. The graph shows its position from the starting point as a function of time. Various segments of the graph are identified by the letters A, B, C, and D. Which segment(s) of the graph represent(s) a constant velocity of +1.0 m/s? Ans: D What was the instantaneous velocity of the object at the end of the eighth second? Ans: zero m/s During which interval(s) did the object move in the negative x direction? Ans: C

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Review - Chapter 3 An eagle is flying due east at 8.9 m/s carrying a gopher in its talons. The gopher manages to break free at a height of 12 m. What is the magnitude of the gopher’s velocity as it reaches the ground?

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