Exam 2: Motion Along a Line

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A car starts from rest and travels a distance of 100 m in 20 seconds, with constant acceleration. The magnitude of the velocity of the car is at the end of the 20 second interval is

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If a flea can jump up to 45 cm above its initial starting point, with what speed is it able to leave the ground when jumping?

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A car travels a distance of 140 km at 70.0 km/hr. It then travels an additional distance of 60.0 km at 40.0 km/hr. The average speed is

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A ball is thrown upward with a velocity of 19.6 m/s. What is its velocity after 3.00 s?

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A car travels at 50.0 km/hr for 2.00 hours. It then travels an additional distance of 40.0 km in 1.00 hour. The average speed of the car for the entire trip is

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A ball is thrown straight up with a speed of 30.0 m/s. What is the maximum height reached by the ball?

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The figure is a graph of the vertical velocity versus time for an elevator. Solve graphically for the height of the elevator above the starting point at t = 20 s. The figure is a graph of the vertical velocity versus time for an elevator. Solve graphically for the height of the elevator above the starting point at t = 20 s.

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The graph shows the speedometer reading of a car as it comes to a stop along a straight-line path. How far does the car move between t = 0 s and t = 16 s? The graph shows the speedometer reading of a car as it comes to a stop along a straight-line path. How far does the car move between t = 0 s and t = 16 s?

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A 4.0 kg mass has a velocity of 10 m/s to the EAST. The mass undergoes a constant acceleration of 4.0 m/s2 to the WEST for 3.0 sec. What is the velocity of the mass at the end of the 3.0 sec interval?

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Displacement is

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A sprinter runs 100.0 m in 9.87 seconds. If he travels at constant acceleration for the first 75.0 m and then at constant velocity for the final 25.0 m, what was his acceleration during the first 75.0 m?

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An object starts from rest and moves in a straight line with an acceleration of 2.0 m/s2 for 3.0 seconds. It then reduces its acceleration to 1.0 m/s2 for 5.0 additional seconds. The magnitude of the velocity is then

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A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It hits the ground in 2.0 s. How high is the building?

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If an object is located 20 m to the left of the origin at 1:00 PM, and later the object is located 30 m to the right of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

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A car traveling at 4.0 m/s has a constant acceleration of 2.0 m/s2 in the same direction as the velocity. After 3.0 seconds, the distance traveled is

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A car traveling at 3.0 m/s has a constant acceleration of 4.0 m/s2 in the same direction as the velocity. After 2.0 seconds, the speed is

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A boat is traveling at 4.0 m/s as it passes the starting line of a race. If the boat accelerates at 1.0 m/s2 in the same direction as the velocity for 6.0 seconds, then the distance the boat has traveled after 6.0 seconds is

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The graph shows vx versus t for an object moving along straight line. What is the average speed from t = 0 to t = 11 s? The graph shows v<sub>x </sub>versus t for an object moving along straight line. What is the average speed from t = 0 to t = 11 s?

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The figure shows the graph of vx versus time for an object moving along the x-axis. Solve graphically for the average acceleration between t = 5.0 s and t = 9.0 s. The figure shows the graph of v<sub>x </sub>versus time for an object moving along the x-axis. Solve graphically for the average acceleration between t = 5.0 s and t = 9.0 s.

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A baseball is pitched, reaching the batter with a speed of 37 m/s, and is hit such that it returns on the same line at 48 m/s. If the ball was in contact with the bat for 0.22 seconds, what was the magnitude of the average acceleration experienced by the ball during the time of contact?

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