Exam 2: Motion in One Dimension

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A car and a truck,starting from rest,have the same acceleration,but the truck accelerates for twice the length of time.Compared with the car,the truck will travel

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A hammer and feather are dropped from the same height above the lunar surface.Which object hits the ground first?

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An object is thrown upward with a velocity of 32 ft/s from a stationary balloon which is 48 ft above the ground.If air resistance is ignored,the total time until the object impacts the ground is

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If we assume that a spaceship could accelerate from rest up to 1% of the speed of light at a constant rate of 9.81 m/s2,how many times the radius of our Solar System (i.e.,the distance from the Sun to Pluto = 5.9 ×\times 109 km)would the spaceship have traveled?

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On a graph that shows position on the vertical axis and time on the horizontal axis,a straight line with a negative slope represents

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A car is traveling at 120 km/h (75 mph).When applied the braking system can stop the car with a deceleration rate of 9.0 m/s2.The typical reaction time for an alert driver is 0.5 s versus 2 s for a sleepy driver.Assuming a typical car length of 5 m,calculate the number of additional car lengths it takes the sleepy driver to stop compared to the alert driver.

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A particle moves from x0 = 30 cm to x = -40 cm in 5 s.The average velocity of the particle during this time interval is

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On a graph that shows velocity on the vertical axis and time on the horizontal axis,constant acceleration is represented by

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On a graph that shows position on the vertical axis and time on the horizontal axis,a parabolic curve that opens upward represents

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You are traveling in your car at 82 km/h (23 m/s)when an emergency arises.If your car is 4 m long,how many car lengths do you travel during the 0.7 s of reaction time (i.e.,the time interval between seeing the emergency and hitting the brake with your foot)?

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Use the following to answer the question: Use the following to answer the question:   -In which graph of v versus t is the magnitude of the particle's acceleration the greatest? -In which graph of v versus t is the magnitude of the particle's acceleration the greatest?

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A balloon is ascending at a rate of 16 ft/s at a height of 32 ft above the ground when a package is dropped.The time taken,in the absence of air resistance,for the package to reach the ground is

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Use the following to answer the question: Use the following to answer the question:   -In which graph of v versus t does the particle end up farthest from its starting point? -In which graph of v versus t does the particle end up farthest from its starting point?

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The change in velocity for a given time interval can be interpreted as

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A Lamborghini sports car can accelerate from zero to 60 mph in 4 seconds.It can decelerate from 60 mph to rest in 120 ft.What is the ratio of average acceleration over average deceleration? (1 mile = 5280 ft)

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On a graph that shows position on the vertical axis and time on the horizontal axis,a straight line with a positive slope represents

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A particle accelerates uniformly from a speed of 30 cm/s to 40 cm/s in 5 s and thereafter moves at a constant speed of 40 cm/s for an additional 3 s.The average speed over this total time interval is

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A projectile is fired vertically upward with a speed of 62 m/s.In the absence of air resistance,the maximum height the projectile attains is

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You drive for 30 min for 30 km East and then another 30 min for 40 km North.Your average speed for the entire trip is

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You drive for 30 min for 30 km East and then another 30 min for 40 km North.Your average velocity for the entire trip is

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