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WorksheetsCh. 2 Contact Forces Review
Total questions: 63
Worksheet time: 58mins
Which of the following is a common contact force?
Gravity
Magnetism
Friction
Nuclear force
What is the purpose of a force diagram?
To calculate mass
To analyze forces acting on an object
To measure temperature
To determine volume
What is momentum?
The product of mass and velocity
The sum of all forces
The rate of change of speed
The measure of gravitational pull
What does the law of conservation of momentum state?
Momentum is always increasing
Momentum is not created/destroyed
Momentum is equal to force times distance
Momentum is inversely proportional to mass
Which term describes the change in position of an object that includes direction?
Speed
Displacement
Velocity
Acceleration
How is speed calculated?
Distance divided by time
Mass times acceleration
Force divided by area
Energy divided by time
What is Newton's 1st Law of Motion also known as?
Law of Acceleration
Law of Inertia
Law of Action-Reaction
Law of Conservation
What formula represents Newton's 2nd Law of Motion?
F = ma
E = mc^2
P = mv
V = IR
What does Newton's 3rd Law of Motion state?
For every action, there is an equal and opposite reaction
An object in motion stays in motion
Force equals mass times acceleration
Energy cannot be created or destroyed
Which of the following is NOT a contact force?
Tension
Air resistance
Gravity
Normal force
What is the unit of force in the International System of Units (SI)?
Joule
Newton
Watt
Pascal
Which of the following describes acceleration?
Change in velocity over time
Distance traveled per unit time
Mass per unit volume
Force per unit area
What is the term for the force that opposes motion between two surfaces?
Tension
Friction
Normal force
Air resistance
Which of the following is a measure of how fast something is moving in a specific direction?
Speed
Velocity
Acceleration
Displacement
What is the effect of air resistance on a moving object?
It increases the object's speed
It decreases the object's speed
It has no effect on the object's speed
It changes the object's mass
Evidence of air resistance (despite air being invisible) includes . . .
Meteors burning up in Earth's atmosphere
Baseball slowing down after it is thrown
Gravity pulling falling leaves to the ground
The 100 N force pointing up is the ____ force and the 100 N force pointing down is the ____ force.
friction, air resistance
normal, gravity
friction, tension
normal, friction
The SI Unit of momentum is . . .
kg⋅m/s
m/s2
m/s
N⋅s
The Law of the Conservation of Momentum states that after colliding, the momentum of the first ball will ____ as the second ball's momentum increases.
increase
decrease
remain the same
Velocity and speed are the same, except velocity includes a ____.
SI unit
direction
vector
force
A negative value in an acceleration calculation means that the object is moving in what way?
not enough information
accelerating
decelerating
getting faster
Bicyclists fly over the handlebars after slamming on the front brakes because of . . .
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Inertia
Newton's 2nd law of motion deals with . . .
colliding objects
mathematical relationships
action-reactions
objects in space
The car's front end crumbles because of . . .
its fast velocity
Newton's 2nd law
reaction force from the wall
wall attacks it
What is happening in this position-time graph?
moving away at a constant speed
moving towards at a constant speed
moving away increasing speed
moving towards increasing speed
How is "no motion" represented on a distance-time graph?
horizontal line
vertical line
curved line
straight line
A steep slope on a distance-time graph indicates
fast motion
slow motion
changing speeds
no motion
What is a force?
a push
a pull
a push or a pull
none of the above
Force is measured in:
Newtons
Grams
Milliliters
Centimeters
What is net force?
The sum of all forces acting on an object
The force from a net
The force moving the object to the left
The force moving the object to the right
Why does a semi truck have more momentum than a car if they are both traveling at 60mph?
Truck is more massive
Truck is less massive
Car is moving faster
Car is more massive
A book has a mass of 5 grams. Another book has a mass of 10 grams. Which book will take more force to move?
the book that weighs 5 grams
the book that weighs 10 grams
They will both take the same amount of force to move.
Why does a soccer ball eventually stop rolling once it’s kicked on a grassy field?
none of these
Gravity acts upon it.
Light acts upon it.
Friction acts upon it.
Whenever an object is moving, there is always this force opposing the motion:
normal force
gravity
friction
applied force
What is the name of the missing force?
frictional force
normal force
gravity
applied force
A downward-moving skydiver who has just opened the parachute is slowing down. Which force diagram shows this sitation?
This object is being pushed on a surface. What direction would it be moving? (pick all that apply):
up
down
left
right
A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?
A chandelier is hung from the ceiling and supported by what force?
tension
friction
air resistance
gravity
The equation to calculate momentum is
p = m x v
p = 1/2 m x v2
p = m x g x h
p = m x g
The slope on a distance vs. time graph tells you
Mr. Johnson's age
Speed
Distance
Displacement
What does the slope on a velocity vs. time graph tell you?
Speed
Distance
Acceleration
What does the graph tell you about the object's speed?
Slowing down
Speeding up
Constant speed
Coach Tyree's 40 yard dash speed
What is happening between 2 and 3 seconds?
The object is not moving.
The object is not accelerating.
The object is slowing down.
The object is speeding up.
Which law is this picture illustrating?
Law 1
Law 2
Law 3
____ force is needed to move objects of larger mass.
less
equal
more
light
The reason a ball bounces up when it hits the ground:
The ball and ground repel each other.
The ball exerts a force on the ground, and the ground exerts a force on the ball.
If the man pushes with an equal amount of force, which object will accelerate more?
Car because it has more mass
Lawnmower because it has less mass
Car because it has less mass
Lawnmower because it has more mass
