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What force would an asphalt road have to give a 6,000 kg truck in order to accelerate it at 2.2 m/s2 over a level road? |
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2 | |
Find the resulting acceleration from a 300 N force acting on an object with a mass of 3,000 kg. |
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3 | |
How much time would be required to stop a 2,000 kg car that is moving at 80.0 km/hr if the braking force is 8,000 N? |
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4 | |
If a space probe weighs 39,200 N on the surface of Earth, what will be the mass of the probe on the surface of Mars? |
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5 | |
On the earth, an astronaut and equipment weigh 1,960 N. Weightless in space, the motionless astronaut and equipment are accelerated by a rocket pack with a 100 N thruster that fires for 2 s. What is the resulting final velocity? |
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6 | |
What force is applied to the seatback of an 80.0 kg passenger on a jet plane that is accelerating at 5 m/s2? How does this force compare to the weight of the person? |
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7 | |
Calculations show that acceleration due to gravity is 1.63 m/s2 at the surface of the moon, and the distance to the center of the moon is 1.74 x 106 m. Use these figures to calculate the mass of the moon. |
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8 | |
An astronaut and space suit weigh 1,960 N on the earth. What weight would they have on the moon, where gravity has a value of 1.63 m/s2? |
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9 | |
To what altitude above the earth?s surface would you need to travel to have half your weight? |
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10 | |
What is the momentum of a 30.0 kg shell fired from a cannon with a velocity of 500 m/s? |
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11 | |
What is the momentum of a 39.2 N bowling ball with a velocity of 7.00 m/s? |
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12 | |
A 39.2 N bowling ball moving at 7.00 m/s collides head on with a 29.4 N bowling ball that is moving at 9.33 m/s. Which way will the balls move after the impact? |
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13 | |
A 30.0 kg shell is fired from a 2,000 kg cannon with a velocity of 500 m/s. What is the resulting velocity of the cannon? |
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14 | |
An 80.0 kg man is standing on a frictionless ice surface when he throws a 4.00 kg book at 20.0 m/s. With what velocity does the man move across the ice? |
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15 | |
A person with a mass of 70.0 kg steps horizontally from the side of a 300.0 kg boat at 2.00 m/s. What happens to the boat? |
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16 | |
(a) What is the weight of a 5.00 kg backpack? (b) What is the acceleration of the backpack if a net force of 10.0 N is applied? |
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17 | |
What net force is required to accelerate a 20.0 kg object to 10.0 m/s2? |
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18 | |
What forward force must the ground apply to the foot of a 60.0 kg person to result in an acceleration of 1.00 m/s2? |
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19 | |
A 1,000.0 kg car accelerates uniformly to double its speed from 36.0 km/hr in 5.00 s. What net force acted on this car? |
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20 | |
A net force of 3,000.0 N accelerates a car from rest to 36.0 km/hr in 5.00 s. (a) What is the mass of the car? (b) What is the weight of the car? |
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21 | |
How much does a 60.0 kg person weigh? |
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22 | |
A 60.0 gram tennis ball is struck by a racket with a force of 425.0 N for 0.01 s. What is the speed of the tennis ball in km/hr as a result? |
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23 | |
Compare the momentum of (a) a 2,000.0 kg car moving at 25.0 m/s and (b) a 1,250 kg car moving at 40.0 m/s. |
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24 | |
What tension must a 50.0 cm length of string support in order to whirl an attached 1,000.0 gram stone in a circular path at 5.00 m/s? |
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25 | |
What is the maximum speed at which a 1,000.0 kg car can move around a curve with a radius of 30.0 m if the tires provide a maximum frictional force of 2,700.0 N? |
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26 | |
How much centripetal force is needed to keep a 60.0 kg person and skateboard moving at 6.0 m/s in a circle with a 10.0 m radius? |
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27 | |
A 200.0 kg astronaut and equipment move with a velocity of 2.00 m/s toward an orbiting spacecraft. How long will the astronaut need to fire a 100.0 N rocket backpack to stop the motion relative to the spacecraft? |
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2002 McGraw-Hill Higher Education