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Phy Sci Ch 2; MC #2

Phy sci MC #2

QuestionAnswer
What is necessary to designate a position? A reference point
Which one of the following describes an object in motion? It is continuously changing position
Which one of the following is always true about the magnitude of a displacement? It is less than or equal to the distance traveled
Which is true of an object with constant velocity? It has constant speed; It has constant direction; It travels equal distances in equal times
Acceleration may result from what? An increase speed; A decrease in speed; A change in direction
For a constant linear acceleration, what changes uniformly? Velocity
Which one of the following is true for a deceleration? The acceleration is in the direction opposite to the velocity
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
Which of the following components of a car could also be technically called an "accelerator"? Gas pedal; Brake pedal; Steering wheel
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
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
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
Created by: scarangelo
 

 



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