1.
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A red ball slides off a table as shown in the animation (position is in meters and time is in seconds). Ignore air friction. Which animation correctly represents the path of the ball?
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| Animation 1 |
| Animation 2 |
| Animation 3 |
| Animation 4 |
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2.
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A red ball slides off a table as shown in the animation (position is in meters and time is in seconds). Ignore air friction. If the ball undergoes an elastic collision with the other table (vy remains the same and vx changes sign) where will the red ball land? Start
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| 5.2 m |
| -0.3 m |
| 150 N/m |
| 1.1 m |
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3.
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A projectile is launched as shown in the animation (position is shown in meters and time is shown in seconds). Where does the ball reach its maximum speed, and what is its speed when it gets there?
Start Interactive Hint
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| (43, 28.2), 0 m/s |
| (43, 28.2), 18 m/s |
| (43, 28.2), 9 m/s |
| (0, 0), -9 m/s |
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4.
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A doughnut (mmm, doughnut) is launched as shown in the animation. What is the launch angle (position is shown in meters and time is shown in seconds) as measured from the +x direction?
Start
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| 40 *
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| 45 * |
| 50 * |
| 55 * |
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5.
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A superball is projected horizontally as shown in the animation. 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 resitance. Start
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| 1.00 |
| 0.76 |
| 0.87 |
| 0.93 |
