Unit 3 Review: Question Preview (ID: 21633)


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Two containers were delivered to the office. The mass of one container is 4 kg, while the other is 2.5 kg. Which of the following situations demonstrates work being done?
a) A person is standing and holding the 2.5 kg container. b) A person is holding the 4 kg container above their head. c) A person is lifting the 2.5 kg container from the floor to the table. d) A person is holding the 4 kg container while sitting in their seat.
A student sets up an experiment to determine how the angle of a ramp affects the amount of force needed to move a 1 kg object. What equipment would they use?
a) ramp, spring scale, and 1 kg mass b) ramp, triple beam balance, and 1 kg mass c) ramp, triple beam balance, spring scale, and 1 kg mass d) ramp, triple beam balance, spring scale, graduated cylinder, and 1 kg mass
Two people are moving the same mass box into the same height truck with two different length ramps which person has to use more force?
a) The person using the short ramp has to use more force. b) The person using the long ramp has to use more force. c) They both use the same amount of force. d) Their is not enough information provided.
If two people are moving the same mass box into the same height truck with two different length ramps, who does the most work?
a) They are both doing the same amount of work. b) The person using the short ramp is doing more work. c) The man using the long ramp is doing more work. d) There is not enough information provided.
What causes a plant to wilt?
a) Lack of turgor pressure. b) Response to gravity. c) Negative homeostasis. d) Excessive humidity.
In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant's response to
a) gravity b) sunlight c) osmosis d) water
How much work is done if a force of 2 Newtons is used to move a box 4 meters?
a) 8 Nm b) 0.5 Nm c) 2 Nm d) 6 Nm
Which of the following is an example of work being done?
a) Turning a page in a book. b) Reading a book. c) Resting a book against a wall. d) Holding a book.
What proves that work is being done?
a) An object moves from one point to another. b) An object does not move. c) An object has mass. d) An object has volume.
Which is an example of no work being done?
a) Batter stands with his bat in the air. b) Batter walks to home plate with his bat. c) Batter swings the bat. d) Batter makes contact with the ball.
Which of the following is an example of no work?
a) Pushing a wall. b) Lifting a box above your head. c) Pushing a box up a ramp. d) Tossing a box into the truck.
How much work is done if an object is moved 25 meters with 8 Newtons of force?
a) 200 Nm b) 180 Nm c) 150 Nm d) 120 Nm
How much work is done if an object is moved 15 meters with 2.5 Newtons of force?
a) 60 Nm b) 37.5 Nm c) 25.5 Nm d) 45 Nm
How much work is done if box moves 2 meters with 8 Newtons of force?
a) 16 Nm b) 4 Nm c) 8 Nm d) 12 Nm
If you push a box across the floor which statement is true?
a) No work is being done because the box is not lifted. b) No work is done because the forces are balanced. c) There is not enough information to tell. d) Work is done because the box is being pushed and it is moving.
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