Chapter 3: Kinematics in Two Dimensions; Vectors
Physlet® Problems



1.  

Identify the correct relationship between the vectors.
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Interactive Hint



2.  

Find the magnitude of the sum of the red and the green vectors.
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Interactive Hint



3.  


An object travels as shown in the animation. What is the magnitude of its displacement if the position is shown in meters?
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4.  


What distance has the object traveled if the position is shown in meters?
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5.  


Find the vertical velocity component of the black ball.
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Interactive Hint



6.  


A projectile is launched as shown in the animation (position is shown in meters and time is shown in seconds). What is its speed when it reaches its maximum height?
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Interactive Hint



7.  

What is its speed 3.0 s after the projectile is launched?
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Interactive Hint



8.  


An object is launched as shown in the animation. What is the launch angle (position is shown in meters and time is shown in seconds) measured from the +x direction?
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9.  


A superball is projected horizontally as shown. What is the ratio of the vertical speed of the ball just after it hits the ground to the vertical speed of the ball just before it hits the ground (position is shown in meters and time is shown in seconds)? Neglect air resistance.
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10.  


Which of the following four animations shows an object undergoing constant acceleration during the specified time interval?



11.  


Find the velocity of the blue ball with respect to the red ball.
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Interactive Hint



12.  


While flying to the right at 4 m/s in a small plane and looking out the window, you view a boat moving in the water as shown in the animation. Assume position in meters and time in seconds. What is the speed of the boat with respect to the water?  (There is no grid since you do not have any reference marks on the water.  You can, however, pause the animation and use the mouse to measure position.)
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Interactive Hint

Note: answer choices in this exercise are randomized.

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