In: Physics
F(t)=20t-10t^2+150
You have the above time dependent force acting on a 120 kg block, opposing its motion. The block was initially traveling at 10 m/s along a flat, frictionless surface, and the force acts for a length of time until the force first reaches zero.
How fast is the block traveling once the force has stopped?
2 m/s |
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3 m/s |
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4 m/s |
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5 m/s |
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6 m/s |
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7 m/s |
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8 m/s |
You have the above time dependent force acting on a 120 kg block, opposing its motion. The block was initially traveling at 10 m/s along a flat, frictionless surface, and the force acts for a length of time until the force first reaches zero.
How much Impulse does this force supply by the time it stops?
30 kg m/s |
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333 kg m/s |
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767 kg m/s |
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583 kg m/s |
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85 kg m/s |
You have the above time dependent force acting on a 120 kg block, opposing its motion. The block was initially traveling at 10 m/s along a flat, frictionless surface, and the force acts for a length of time until the force first reaches zero.
How long, in seconds, until the force stops acting on the block?
8 s |
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4 s |
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7 s |
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3 s |
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5 s |
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2 s |
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6 s |
A 5 kg ball is traveling to the right at a speed of 12 m/s. A 2 kg ball is traveling to the left at 30 m/s. They collide in a head-on perfectly elastic collision.
What is the final speed of the 2 kg ball?
0 m/s |
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12 m/s |
||
17 m/s |
||
30 m/s |
||
42 m/s |
A 5 kg ball is traveling to the right at a speed of 12 m/s. A 2 kg ball is traveling to the left at 30 m/s. They collide in a head-on perfectly elastic collision.
What is the final speed of the 5 kg ball?
0 m/s |
||
12 m/s |
||
17 m/s |
||
30 m/s |
||
42 m/s |
A 5 kg ball is traveling to the right at a speed of 12 m/s. A 2 kg ball is traveling to the right at 30 m/s as well. They collide in a rear end inelastic collision.
What is their final speed?
0 m/s |
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12 m/s |
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17 m/s |
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30 m/s |
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42 m/s |