A small solid cylinder rolls up along a curved surface (see figure below) with an initial velocity v. It will ascend up to a height of 'h’ equal to B. 3v/4g D. v/4g 6. Three skiers of different masses glide down the surface of a hill. One skier starts on top of the hill, the second half way down the hill, and the third almost at the bottom of the hill. Who has the greater A. 3v/2g C.v/2g potential energy among the three? A. The skier on top of the hill. B. The skier half way down the hill. C. They both have the same potential energy. D. The skier almost at the bcttom of the hill. 7. A 1.00-kg moving cart has a kinetic energy of 1.00 J when its speed is A. 0.450 m/s B. 1.00 m/s C. 1:41 m/s D. 4.40 m/s 8. The law of conservation of energy is a statement that A. energy must be conserved and you are breaking a law if you waste energy. B. the supply of energy is limited so we must conserve. C. the total amount of energy is constant. D. energy cannot be used faster than it is created. 9. During a flood, a tree of mass 90.0 kg falls down from a cliff whose height is 50.0 m. Calculate the magnitude of the velocity of the tree at the ground. A. 20.5 m/s B. 31.3 m/s C. 45.0 m/s D. 62.0 m/s 80 • WORK, ENERGY, AND POWER 20. As you increase the distance in moving an object, what would happen to the power? A. It would increase C. It would not change B. It would decrease D. It would undergo variable motion.
A small solid cylinder rolls up along a curved surface (see figure below) with an initial velocity v. It will ascend up to a height of 'h’ equal to B. 3v/4g D. v/4g 6. Three skiers of different masses glide down the surface of a hill. One skier starts on top of the hill, the second half way down the hill, and the third almost at the bottom of the hill. Who has the greater A. 3v/2g C.v/2g potential energy among the three? A. The skier on top of the hill. B. The skier half way down the hill. C. They both have the same potential energy. D. The skier almost at the bcttom of the hill. 7. A 1.00-kg moving cart has a kinetic energy of 1.00 J when its speed is A. 0.450 m/s B. 1.00 m/s C. 1:41 m/s D. 4.40 m/s 8. The law of conservation of energy is a statement that A. energy must be conserved and you are breaking a law if you waste energy. B. the supply of energy is limited so we must conserve. C. the total amount of energy is constant. D. energy cannot be used faster than it is created. 9. During a flood, a tree of mass 90.0 kg falls down from a cliff whose height is 50.0 m. Calculate the magnitude of the velocity of the tree at the ground. A. 20.5 m/s B. 31.3 m/s C. 45.0 m/s D. 62.0 m/s 80 • WORK, ENERGY, AND POWER 20. As you increase the distance in moving an object, what would happen to the power? A. It would increase C. It would not change B. It would decrease D. It would undergo variable motion.
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Transcribed Image Text:5. A small solid cylinder rolls up along a curved surface (see figure below)
with an initial velocity v. It will ascend up to a height of 'h' equal to
B. 3v/4g
D. v/4g
A. 3v/2g
c.V/29
6. Three skiers of different masses glide down the surface of a hill. One skier starts on top of the hill,
the second half way down the hill, and the third almost at the bottom of the hill. Who has the greater
potential energy among the three?
A. The skier on top of the hill.
B. The skier half way down the hill.
C. They both have the same potential energy.
D. The skier almost at the bcttom of the hill.
7. A 1.00-kg moving cart has a kinetic energy of 1.00 J when its speed is
A. 0.450 m/s
8. The law of conservation of energy is a statement that _.
A. energy must be conserved and you are breaking a law if you waste energy.
B. the supply of energy is limited so we must conserve.
C. the total amount of energy is constant.
D. energy cannot be used faster than it is created.
9. During a flood, a tree of mass 90.0 kg falls down from a cliff whose height is 50.0 m. Calculate the
B. 1.00 m/s
C. 1:41 m/s
D. 4.40 m/s
magnitude of the velocity of the tree at the ground.
A. 20.5 m/s
B. 31.3 m/s
C. 45.0 m/s
D. 62.0 m/s
80 • WO RK, ENERGY, AND POWER
10. As you increase the distance in moving an object, what would happen to the power
A. It would increase
C. It would not change
B. It would decrease
D. It would undergo variable motion.
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