Phy sci MC #2
Help!
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| What is necessary to designate a position? | A reference point
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| Which one of the following describes an object in motion? | It is continuously changing position
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| Which one of the following is always true about the magnitude of a displacement? | It is less than or equal to the distance traveled
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| Which is true of an object with constant velocity? | It has constant speed; It has constant direction; It travels equal distances in equal times
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| Acceleration may result from what? | An increase speed; A decrease in speed; A change in direction
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| For a constant linear acceleration, what changes uniformly? | Velocity
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| Which one of the following is true for a deceleration? | The acceleration is in the direction opposite to the velocity
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| An object is projected straight upward. Neglecting air resistance, it ______ | Returns with the same initial speed; Has zero velocity at the top of the projection; Has a constant acceleration throughout
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| Which of the following components of a car could also be technically called an "accelerator"? | Gas pedal; Brake pedal; Steering wheel
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| If the speed of an object in uniform circular motion is doubled and the radial distance remains constant, then the magnitude of the centripetal acceleration increases by what factor? | 4
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| In the absence of air resistance, a projectile launched at an angle of 33 above the horizontal will have the same range as a projectile launched at which angle? | 57 Degrees
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| A football is thrown on a long pass. Compared to the ball's initial horizontal velocity, the velocity at the highest point is ______ | The same
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Created by:
scarangelo