1.
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A 0.5 kg ball on an air track is attached to a compressed spring (at x=0 the spring is unstretched) as shown in the animation (position is in meters and time is in seconds). Determine which curve properly represents the momentum of the mass during the animation. Start
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| Graph 1 |
| Graph 2 |
| Graph 3 |
| Graph 4 |
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2.
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A 0.5 kg ball on an air track is attached to a compressed spring (at x=0 the spring is unstretched) as shown in the animation (position is in meters and time is in seconds). Determine which area properly represents the impulse received by the ball from the spring during the animation (assume v=0 at the beginning and end of the animation). Start
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| Graph 1 |
| Graph 2 |
| Graph 3 |
| Graph 4 |
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3.
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Which undergoes the greater change in momentum after colliding with the table (position is in meters and time is in seconds), a flowerpot or a ball of the exact same mass? Start
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| flowerpot |
| blue ball |
| neither, both experience the same change in momentum |
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4.
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Which automobile undergoes the greater change in momentum after colliding with the wall (position is in meters and time is in seconds)? Start
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| blue car |
| red car |
| neither, both balls experience the same change in momentum |
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5.
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A 2 kg hammer strikes a 1.5 gram nail as shown in the animation (position given in centimeters and time is in seconds). Determine the average force exerted on the nail by the hammer. Start
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| -.25 N |
| .25 N |
| .4 N |
| .12 N |
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6.
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A 1.5 kg brick falls a given height onto a 1.5 gram nail as shown in the animation (position is in meters and time is in seconds). Determine the average force exerted on the nail by the brick. Start
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| 880 N |
| 882 N |
| 8.82 N |
| 441 N |
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7.
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Identical balls (same mass), one red and one black undergo an elastic collision as depicted in the above animation (position is in meters and time is in seconds). The surface between the balls and the table is frictionless. Determine which one(s) of the following animations describes a physical situation.
Start Animation 1
Start Animation 2
Start Animation 3
Start Animation 4
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| Animation 1 |
| Animations 1, 2, and 4 |
| Animations 1 and 4 |
| Animation 3 |
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8.
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A small car (red) collides head-on with a large truck (blue) as shown in the animation (position is in meters and time is in seconds). After the collision the vehicles skid to a stop. Which vehicle undergoes the larger change in momentum (magnitude) due to the collision? Start
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| car |
| truck |
| neither, both vehicles experience the same change in momentum due to the collision |
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9.
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From the collision in the above animation (position in meters and time in seconds), determine the ratio of the red mass to the black mass. Start
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| 9 |
| M/m =.33 |
| M/m = 3 |
| 1 |
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10.
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From the collision in the above animation (position in meters and time in seconds), determine the ratio of the red mass to the black mass: m / M. Start
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| m /M = 0.6 |
| m /M = .25 |
| m /M = 4 |
| m /M = 1 |
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11.
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A green block sits on a red block as shown in the animation (position is in meters and time is in seconds). The all surfaces are frictionless. Given the self-propelled motion of the green block, determine the ratio of masses: M / m ( red block / green block ). Start
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| 4.4 |
| 5.4 |
| 3.5 |
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12.
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A spring is attached to a cart on an air track. With the spring compressed and locked, the cart is brought into contact with another cart. When the spring is released, the carts travel as shown in the animation (position is in meters and time is in seconds). What is the velocity of the center of mass of the two carts after the spring is released. Start
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| 0.50 m/s |
| 1.5 m/s |
| -1.0 m/s |
| zero |
