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WorksheetsForces and Free Body Diagrams Review for Quiz
Total questions: 75
Worksheet time: 1hrs 15mins
Whenever an object is moving, there is always this force opposing the motion:
inertia
momentum
friction
applied force
Which diagram best shows person pushing a couch (accelerating) across the floor?
Which of these include only contact forces?
Fb Fg FN
Fapp FT FN
Fb Fapp Fg
Fair FN Fg
The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:
normal
abnormal
static
inertia
Which is the best description of tension force in a system with balanced forces?
The force that opposes motion
The force that opposes weight
The force in a string that is equal to weight
The force that opposes friction
The same as a frictional force.
It is not equivalent to the weight of an object.
A downward-moving skydiver who has just opened the parachute is slowing down.
Which of the following is an example of an applied force?
The force of gravity acting on a falling apple.
The force exerted by a person pushing a shopping cart.
The force of friction between a car's tires and the road.
The tension in a rope holding a swing.
What is an example of a force?
Energy
Power
Pressure
Weight
What force is acting on the cat at the end?
Gravity
Friction
Momentum
The force that is transmitted through a string, rope, cable or wire when it is pulled tight.
Spring Force
Tension Force
Normal Force
Applied Force
Which is the force that opposes the applied force?
Force is a vector. Vectors have both _____ and direction.
velocity
displacement
magnitude
gravity
A force is _____.
A push
A pull
A lift
All of these
A diagram which labels the forces acting on an object along with their direction is called _____.
a force diagram
a free body diagram
The unit used to measure forces is called the Newton.
TRUE
FALSE
Which of the following diagrams shows a free body diagram?
In the diagram shown here, the net force is _____.
0 N
10 N, upward
10 N, to the left
10 N, to the right
Which of the following statements is FALSE?
Net forces cause changes in acceleration.
Changes in acceleration always involve objects that speed up.
A force can be measured in Newtons.
If you push harder on an object, then you will have a greater effect on its motion.
What is the primary effect of unbalanced forces acting on an object?
The object moves in a circular path
The object's velocity remains constant
The object accelerates
The object levitates
A 2-kg block slides down a 30° incline as shown with an acceleration of 2 m/s/s. Which of the following diagrams best represents the gravitational force W. the frictional force f, and the normal force N that act on the block?
Identify the correct FBD for the box as it raises at a constant speed.
Identify the correct FBD for the forces acting on block A as it is pulled across a frictionless table
Which of the following is true about this free-body diagram?
the forces are are balanced
the object is free-falling
the object is moving upward
the forces are unbalanced
Paired forces are
in opposite directions
always equal
not possible
added together
The force exerted by ropes and chains is called
tension
normal
elastic
mechanical
The force exerted by ropes and chains is called
tension
normal
elastic
mechanical
Which of the following is possible for an object with balanced forces acting on it? (Choose all that apply)
at rest
moving at constant speed
changing direction
slowing down
How many forces are on a leopard laying stationary on a log?
1
2
3
4
The down-arrow in this diagram is most-likely:
gravity
normal
a push or pull
friction
A man pushes a box across the floor at a constant velocity. There is a force on the box pulling it toward the center of the earth. This is called the
force of gravity
normal force
friction force
applied force
The car in the picture is moving at a constant velocity. What forces does the car experience?
Gravity
Gravity and Normal
Gravity, Normal, and Friction
Gravity, Normal, Friction, and Applied
The (a) of the arrow shows the magnitude of the force.
What do the arrows or vectors represent?
Forces acting on the object
All the acceleration acting on the object
All the ways an object can move
This object could be moving in which directions? (pick all that are correct):
Up
Down
Left
Right
When two forces act in the same direction, how would you calculate the net force?
Subtract the forces
Balance the forces
Add the forces
Divide the forces
How do you calculate the net force when forces are going in the opposite direction?
Add the forces
Divide the forces
Find a fraction of the forces
Subtract the forces
What do the arrows represent in a free body diagram? (Select two)
Object
Direction
Size
Mass
This is defined as forces that are equal in magnitude.
Unbalanced Forces
Forces
Balanced Forces
Net force
A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.
If this object were moving to the right, the left-arrow in this diagram would most likely represent:
gravity
normal
a push or pull
friction
Calculate the net force for the diagram.
800 N down unbalanced
600N down balanced
400 N down unbalanced
400 N up unbalanced
If the net force is 40 N Upward, What must Vector D's measurement be?
20 N
40 N
100 N
60 N
If the Net Force is 40 N to the right, what must the friction force be? (green arrow)
40 N
100 N
20 N
0 N
What does the F stand for on a free-body diagram?
Free
Fan
Net
Force
Which of the following will lead to the object moving? (2 correct answers)
Balanced Forces
UnBalanced Forces
A net force of 0N
A net force of any number OTHER THAN 0N
Which terms mean the same thing?
Balanced Forces & Net Force of 0N
Balanced Forces & The Object is Not Moving
The Object is Not Moving & Net Force of 0N
All 3 mean the same thing
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
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
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
Friction is a
Contact Force
Myth
Non-contact Force
A force applied to another object that is NOT in direct contact with it is a
Contact Force
Jedi Force
Non-contact Force
Gravitational Force
A force between two objects that are TOUCHING is a
Non-contact Force
Contact Force
Gravitational Force
Jedi Force
Choose the word that best fits this definition:
A graphical illustration used to visualize the applied forces, moments, and resulting reactions on a body in a given condition.
Inertia
Forces
Free Body Diagram
Friction
Choose the word that best fits this definition:
An everyday force that is felt when a surface pushes against an object that is placed on that surface. A contact force that is perpendicular to the surface that an object contacts.
Mass
Weight
Net Force
Normal Force
What is the overall Net Force?
10 N, Left
671 N, Right
601 N, Left
70 N, Right
TRUE or FALSE
Friction force always goes in the same direction as the motion of an object.
True
False
What type of force is the BLUE arrow indicating?
Applied Force
Gravity
Friction
Normal Force
