Exam 2: Motion Along a Straight Line

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As a rocket is accelerating vertically upward at 9.8 m/s2 near the Earth's surface, it releases a projectile. Immediately after release the acceleration of the projectile is:

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The coordinate-time graph of an object is a straight line with a positive slope. The object has:

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An object is dropped from rest. Which of the five following graphs correctly represents its motion? The positive direction is taken to be upward. Take careful note of the axes. An object is dropped from rest. Which of the five following graphs correctly represents its motion? The positive direction is taken to be upward. Take careful note of the axes.

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At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest. The truck travels at constant velocity and the car accelerates at 3 m/s2. How much time does the car take to catch up to the truck?

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What is the relationship between instantaneous speed and instantaneous velocity?

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An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4 m/s2. Its average velocity as it goes from x = 2 m to x = 8 m is:

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Throughout a time interval, while the speed of a particle increases as it moves along the x axis, its velocity and acceleration could be:

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A projectile is shot vertically upward with a given initial velocity. It reaches a maximum height of 100 m. If on a second shot the initial velocity is doubled, then the projectile will reach a maximum height of:

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Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed? Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed?

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An elevator is moving upward with constant acceleration. The dashed curve shows the position y of the ceiling of the elevator as a function of the time t. At the instant indicated by the dot, a bolt breaks loose and drops from the ceiling. Which curve best represents the position of the bolt as a function of time? An elevator is moving upward with constant acceleration. The dashed curve shows the position y of the ceiling of the elevator as a function of the time t. At the instant indicated by the dot, a bolt breaks loose and drops from the ceiling. Which curve best represents the position of the bolt as a function of time?

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A feather, initially at rest, is released in a vacuum 12 m above the surface of the Earth. Which of the following statements is correct?

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An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s2 west for 3 seconds. During this time the object travels a distance of:

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An object is thrown vertically into the air. Which of the following five graphs represents the velocity (v) of the object as a function of the time (t)? The positive direction is taken to be upward. An object is thrown vertically into the air. Which of the following five graphs represents the velocity (v) of the object as a function of the time (t)? The positive direction is taken to be upward.

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An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 1.0 second later is:

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A stone is released from rest from the edge of a building roof 190 m above the ground. Neglecting air resistance, the speed of the stone, just before striking the ground, is:

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A stone is dropped from a cliff. The graph (carefully note the axes) that best represents its motion while it falls is: A stone is dropped from a cliff. The graph (carefully note the axes) that best represents its motion while it falls is:

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At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by a = -0.50t, in m/s2 for t in seconds. At the end of 4.0 s it has traveled:

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An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 6.0 s later is:

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A ball is in free fall motion. Upward is taken to be the positive direction. The displacement of the ball is:

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Displacement can be obtained from:

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