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Motion in Two and Three Dimensions
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Fundamentals of Physics Study Set 2

Physics & Astronomy

Quiz 4 :
Motion in Two and Three Dimensions

Quiz 4 :
Motion in Two and Three Dimensions

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Which of the following is a scalar quantity?
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Answer:

A

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Velocity is defined as:
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Answer:

A

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Which of the following is a vector quantity?
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Answer:

E

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Sally starts from home, walks 300 m east and then 500 m south, and arrives at her school.How far, in a straight line, is Sally's school from her home?
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From your window you can see a high-rise building several blocks away.You check the map and see that the building is 560 m away from you in a straight line, in a direction 30° south of east.However, the roads are all east-west and north-south.If you want to walk from your house to the building, how far in each direction do you have to walk?
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A particle goes from x = -2 m, y = 3 m, z = 1 m to x = 3 m, y = -1 m, z = 4 m.Its displacement is:
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A jet plane in straight horizontal flight passes over your head.When it is directly above you, the sound seems to come from a point behind the plane in a direction 30 from the vertical.The speed of the plane is:
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What is the difference between speed and velocity?
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An object moves from x = -2.1 m, y = 3.7 m, z = 1.4 m to x = 3.3 m, y = -1.1 m, z = 4.2 m in a time of 5.3 s.What is its average velocity?
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An object moves from x = -2.1 m, y = 3.7 m to x = 3.3 m, y = -1.1 m in a time of 5.3 s.What is its average velocity?
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A plane traveling north at 200 m/s turns and then travels south at 200 m/s.The change in its velocity is:
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Acceleration is defined as:
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Which of the following is NOT an example of accelerated motion?
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An object has a velocity of (5.4 m/s)− (4.8 m/s).Over a period of 1.3 s, its velocity changes to (1.7 m/s)+ (5.9 m/s).What is its acceleration?
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The velocity of an object as a function of time is given by v = (12.5t − 7.2t2)+ (4.3t3).What is its acceleration as a function of time?
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An object is at rest at x = 0 m, y = 0 m.It accelerates at a rate of (−3.2 m/s2)+ (8.6 m/s2).After accelerating for 4.7 seconds its coordinates are:
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Two bodies are falling with negligible air resistance, side by side, above a horizontal plane.If one of the bodies is given an additional horizontal acceleration during its descent, it:
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The velocity of a projectile equals its initial velocity added to:
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Identical guns fire identical bullets horizontally at the same speed from the same height above level planes, one on the Earth and one on the Moon.Which of the following three statements is/are true? I.The horizontal distance traveled by the bullet is greater for the Moon. II.The flight time is less for the bullet on the Earth. III.The velocities of the bullets at impact are the same.
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Which of the curves on the graph below best represents the vertical component vy versus t for a projectile fired at an angle of 45 above the horizontal? img
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