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| 1 | |
A body takes 10 seconds to go from rest to a speed of 50 m/s. What is the magnitude of the average acceleration of the body? |
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| 2 | |
How would the momentum of a body change if its mass remained constant but its velocity tripled? |
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| 3 | |
Suppose object A is four times as massive as object B. How does the acceleration of object A compare to that of object B if the same force is applied to each object? |
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| 4 | |
What is the acceleration of a 4 kg body to which an unbalanced 18 N force is applied? |
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| 5 | |
Identical forces are applied to two objects. The acceleration of A is 20 times the acceleration of B. How does the mass of A compare with the mass of B? |
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| 6 | |
Suppose an astronaut in space pushes a piece of equipment away from her. The astronaut is ten times as massive as the equipment. The equipment is accelerated to a velocity of 4 m/s toward Polaris. How fast and in what direction will the astronaut move as a result of pushing the equipment? |
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| 7 | |
How would the gravitational force between two bodies change if the mass of each were doubled and the distance between them were also doubled? |
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| 8 | |
What is the strength of the gravitational force between the Earth and the Moon? |
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| 9 | |
The distance between two bodies is cut in half. What would happen to the force of gravity between the two bodies? |
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| 10 | |
What would happen to the weight of a body if it were lifted to a distance of two Earth radii above the ground? |
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| 11 | |
What is the weight of a 50 kg person on the Earth's surface? |
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| 12 | |
The acceleration of gravity on Mars is 0.38 Earth gravities. How much would a dog that weighs 80 N (18 pounds) on Earth weigh on Mars? |
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| 13 | |
An asteroid is three times as far from the Sun at aphelion than at perihelion. At perihelion the orbital speed of the asteroid is 25 km/s. What is the orbital speed of the asteroid at aphelion? |
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| 14 | |
Suppose the distance between two stars doubled while the mass of each star doubled as well. What would happen to the orbital period of the two stars? |
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| 15 | |
A planet in a hypothetical planetary system orbits its parent star with an orbital period of 5 years and an orbital distance of 2 AU. How does the mass of the star compare to the mass of the Sun? |
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| 16 | |
Suppose the Sun were twice as massive as it actually is. What would be the orbital period of a planet at a distance of 10 AU from the Sun? |
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| 17 | |
The circular speed at 1 AU from the Sun is 30 km/s. What is the circular velocity at 20 AU? At 0.2 AU? |
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| 18 | |
What is the circular speed at a distance of 5 AU from a star having a mass of 20 solar mass? |
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| 19 | |
Neptune orbits the Sun in an almost circular orbit at a speed of 5.4 km/s. How fast would a space probe at Neptune's distance have to move to escape from the solar system? |
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| 20 | |
What is the escape velocity from the Sun at a distance of 1000 AU? |
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| 21 | |
What are the magnitudes and direction of the not force acting on a body if it is actual only a force of 50 N upward and a force of 30 N downward? |
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| 22 | |
A body has a mass of 10 kg. A force of 20N pulls the body to the north. A force 40N pulls the body to the South. What are the magnitude and direction of the acceleration fo the body? |
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