Unit 10 Test Question Preview (ID: 42425)
Work/No Work.
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How much work is done if a force of 2 N is used to move a box 4 m?
a) 8 Nm
b) 0.5 Nm
c) 2 Nm
d) 6 Nm
A batter walks up to home plate with his bat, stands with his bat in the air, swings his bat, and makes contact with the ball. In which part of this situation is no work occurring?
a) Batter stands with his bat in the air.
b) Batter walks up to home plate with his bat.
c) Batter swings the bat.
d) Batter makes contact with the ball.
Identify a situation below in which work is being done.
a) Turning a page in a science book.
b) Reading a science book.
c) Resting a science book against the wall.
d) Holding a science book.
What evidence proves that no work is being done on an object?
a) An object does not move from one point to another.
b) An object moves from one point to another.
c) An object has mass.
d) An object has volume.
Identify the situation in which no work is being done.
a) The boy pushes on the wall.
b) The boy lifts the box above his head.
c) The boy pushes the box up a ramp.
d) The boy tosses the box into the truck.
A student's family is moving. She is asked to move some boxes out of her room. One box is so heavy she cannot lift it so she pushes it across the floor. Which statement is true?
a) She is performing work because she is pushing on the box and it is moving.
b) She is not doing any work because she is not lifting the box.
c) She is not doing any work because the forces on the box are balanced.
d) There is not enough information to tell whether she is working.
What is the correct equation to use if you need to calculate the amount of work completed?
a) W=Fd
b) W=F/d
c) W=d/F
d)
Four boxes are being pulled a distance of 2.0 m. Which box has the most work applied to it?
a) F=8.0 N
b) F=2.0 N
c) F= 4.0 N
d) F= 6.0 N
Which of the following situations demonstrates work being done?
a) A person is lifting a 2.5 kg container above their head.
b) A person is standing and holding a 4.0 kg container above their head.
c) A person is standing and holding a 2.5 kg container above their head.
d) A person is holding a 4.0 kg container while sitting in their seat.
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
What causes a plant stem to droop?
a) Lack of turgor pressure
b) Response to gravity
c) Excessive humidity
d) Negative homeostasis
Two men are using ramps to load a barrel into a truck. Each is applying the same amount of force. One has a long ramp, the other a short ramp. Who is doing more work to move the barrel into the truck?
a) They are both doing the same amount of work.
b) The man with the short ramp is doing more work.
c) The man with the long ramp is doing more work.
d) There is not enough information provided.
Two men are using ramps to load a barrel into a truck. Each is applying the same amount of force. One has a long ramp, the other a short ramp. Who has to use more force to move the barrel into the truck?
a) The man using the short ramp has to use more force.
b) The man using the long ramp has to use more force.
c) They are both using the same amount of force.
d) There is not enough information provided.
A student was asked to set up an experiment to determine how the angle of a ramp affects the amount of force need to move a 1 kg object. Which pieces of equipment will be used?
a) ramp, spring scale, and 1 kg mass
b) ramp, triple beam balance, and 1 kg mass
c) ramp, triple beam balance, spring scale, 1 kg mass
d) ramp, spring scale, and graduated cylinder
Which piece of equipment is used to measure the amount of force applied?
a) spring scale
b) triple beam balance
c) graduated cylinder
d)
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