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## Quiz 2 : Motion, Forces, and Newtons Laws Study Flashcards  Looking for Introductory Physics Homework Help?

## Quiz 2 :Motion, Forces, and Newtons Laws  Which of the following is not a vector quantity?
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A

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Choose question tag  In one-dimensional motion where the direction is indicated by a plus or minus sign, the average velocity of an object has which of the following properties?
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D

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Choose question tag  Changing the positive direction in a reference frame to the opposite direction does not change the sign of which of the following quantities?
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C

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Choose question tag  Jeff throws a ball straight up. For which situation is the vertical velocity zero?
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Choose question tag  When we add a displacement vector to another displacement vector, the result is:
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Choose question tag  A truck moves 70 m west, then moves 120 m east, and finally moves west again a distance of 90 m. If east is chosen as the positive direction, what is the truck's resultant displacement?
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Choose question tag  In one-dimensional motion, the average speed of an object that moves from one place to another and then back to its original place has which of the following properties?
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Choose question tag  Displacement is which of the following types of quantities?
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Choose question tag  A change in a physical quantity w having initial value wi and final value wf is given by which of the following?
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Choose question tag  A railroad train travels forward along a straight track at 80.0 m/s for 1000 m and then travels at 40.0 m/s for the next 1000 m. What is the average velocity?
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Choose question tag  Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration, x is distance, and t is time)
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Choose question tag  When NASA was communicating with astronauts on the Moon, the time from sending on the Earth to receiving on the moon was 1.33 s. Find the distance from Earth to the Moon. (The speed of radio waves is 3.00 108 m/s.)
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Choose question tag  A ball is thrown vertically upwards at 9.8 m/s. For its complete trip (up and back down to the starting position), its average velocity is:
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Choose question tag  An object moves 10 m east in 30 s and then returns to its starting point taking an additional 70 s. If west is chosen as the positive direction, what is the average speed of the object?
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Choose question tag  On a position-time graph, the slope of the straight line joining two points on the plotted curve that are separated in time by the interval t, is which of the following quantities?
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Choose question tag  A bird, accelerating from rest at a constant rate, experiences a displacement of 37 m in 11 s. What is the average velocity?
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Choose question tag  In which of the following cases is the displacement's magnitude half the distance traveled?
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Choose question tag  The distance of the Earth from the Sun is 93,000,000 miles. If there are 3.15 107 s in one year, find the speed of the Earth in its orbit about the Sun.
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Choose question tag  An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object?
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