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WorksheetsTest review
Total questions: 46
Worksheet time: 37mins
In a force diagram, or free-body diagram, the size/length of the arrow tells you this about the force:
relative strength
relative distance
relative direction
In a force diagram, or free-body diagram, the pointy-end of the arrow tells you this about the force:
relative strength
relative distance
relative direction
With few exceptions, forces
always come in pairs
are always equal
must be balanced
must be unbalanced
What is the NET FORCE of this diagram?
17 N, right
17 N, left
23 N, right
12 N, up
When determining the NET force on an object you should (TWO correct answers)
subtract forces in opposite directions
add forces in the same direction
divide by velocity
multiply by acceleration
What is the appropriate way to indicate Gravity in a diagram?
This object would be moving (pick all that are correct):
up
down
left
right
The down-arrow in this diagram is most-likely:
gravity
normal
a push or pull
friction
The up-arrow in this diagram is most-likely:
gravity
normal
a push or pull
friction
Which of the following best describes the object in this diagram.
A box sitting on the floor.
A hockey puck gliding to the right.
An athlete running to the right.
A skateboarding gliding to the left.
Which of the follow examples are not explained by Newton's first law of motion acting on a single object respectfully?
If I'm riding a skateboard, it doesn't spontaneously reverse direction.
Dropping a box causes it to accelerate downwards.
A ball rolling straight down tilted plane hill won't ever veer left or right unless something pushes it.
A book lying on a desk doesn't start moving without an external force.
What net force is required to keep a 500 kg object moving with a constant velocity. of 10 m/s ?
500 N
50 N
10 N
0 N
Somewhere in the universe an object is moving in a slow arcing turn without changing its speed. From just this information, what can we say about the net force on that object?
There may or may not be a net force on the object; we can’t tell.
There cannot be any net force on the object.
There must be a net force on the object.
Forces can be expressed in units of
newtons
pounds
both A and B
neither A nor B
Which of the following is a legitimate way to describe the force between a skydiver and the earth as the skydiver is falling toward the ground?
The normal force exerted by the earth on the skydiver
The tension force exerted by the earth on the skydiver
The force of gravity exerted by the earth on the skydiver
The drag force exerted by the earth on the skydiver
Which of these is a valid force that could be exerted on a car racing through narrow city streets?
The force of motion pushing the car forward
The force of friction between the road and the car (its tires)
The force of acceleration making the car speed up
The force of inertia keeping the car going forward
Blocks A and B have equal masses and are connected by a rope that passes over a frictionless pulley, as shown. At this moment, the system is in motion, with block B moving downward and A moving upward at a constant speed. Compare the magnitudes of the force of tension exerted on block A and the force of tension exerted on block B.
The force of tension exerted on block A has a larger magnitude than the force of tension exerted on block B.
The force of tension exerted on block A is equal in magnitude to the force of tension exerted on block B.
The force of tension on the two blocks cannot be compared without more information.
The force of tension exerted on block A has a smaller magnitude than the force of tension exerted on block B.
Consider a car at rest, parked on level ground. The force of friction between a car tire and the ground
points backward (opposite the direction the car is facing)
points forward (the direction the car is facing)
points upward (perpendicular to the ground)
is zero
Michael leans on a shopping cart, causing it to start moving. Which statement is true about the forces Michael and the cart exert on each other?
The magnitude of forces cannot be determined without more information.
Michael exerts a larger magnitude force on the cart than the cart exerts on Michael.
Michael exerts a smaller magnitude force on the cart than the cart exerts on Michael.
Michael and the cart exert equal and opposite forces on each other.
Katie punches Aaron in the shoulder. Which statement is true about the forces Katie and Aaron exert on each other?
Katie exerts a force on Aaron’s shoulder and Aaron exerts a force on Katie’s hand
Aaron exerts a force on Katie’s hand, but Katie exerts no force on Aaron.
Katie exerts two separate forces on Aaron, one due to her hand and another due to the punch.
Katie exerts a force on Aaron’s shoulder, but Aaron exerts no force on Katie.
