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WorksheetsForces & Motion
Total questions: 60
Worksheet time: 50mins
What is a force?
something Darth Vadar has
a push or a pull
something you can see
Force is measured in...
cm
m/s2
grams
Newtons
To calculate forces that are in the same direction you...
subtract them
add them
multiply them
divide them
To calculate forces that are in opposite directions you...
add them
subtract them
multiply them
divide them
The unbalanced force that opposes motion is known as...
friction
force
push or pull
the tires on a car
Forces that are considered to be in motion are called...
friction
unbalanced forces
balanced forces
If two cars move toward each other at the same speed which car will have more force?
A larger car because of its mass
A smaller car because of its mass
A larger car because of its speed
A smaller car because of its speed
Inertia is...
an object's ability to change direction
an object's ability to move
forces depend on the mass and weight of the object
an object's tendency to resist change in motion
Which is an example of an unbalanced force?
a puppy sleeping on the couch
a poster hanging on the wall
a jar sitting on a shelf
a girl shooting a basketball
When would the forces acting on the wooden box be balanced?
when it is pushed from one side with one hand
when it is pushed from the same side with two hands
when it is pushed from both sides using the same force
when it is pushed from both sides using different forces
What happens when the same amount of force is applied to both sides of the box?
the forces are unbalanced and will move to the left
the forces are balanced and will move to the right
the forces are unbalanced and will remain at rest
the forces are balanced and will remain at rest
I decided to kick soccer balls of different weights with different forces. Using the data in the table, which ball would travel the farthest?
ball 1
ball 2
ball 3
ball 4
When forces on an object are balanced, what is the net force?
Five
Ten
Six
Zero
Total distance divided by total time is...
average speed
constant speed
instantaneous speed
acceleration
What is the net force?
10 N
0 N
25 N
1 N
What does the solid horizontal slope in this graph represent?
Constant speed
Acceleration
Not moving
What is happening at C?
Stationary
Accelerating
Fast steady speed; moving away from the starting position
Slower steady speed; moving away from the starting position
An object is in motion if it changes position relative to a _____.
net force
reference point
relative point
The force of attraction between two objects; increases as the mass of the objects increase; decreases as the distance between the objects increases ...
gravity
friction
balanced forces
unbalanced forces
The term for when an object speeds up, slows down, or changes direction.
Speed
Velocity
Acceleration
Newtons
A Cheetah runs 140 meters in 5 seconds. What is its average speed?
28 m/s
700 m/s
.036 m/s
60 mph
Acceleration is ____ when an object is speeding up.
positive
balanced
negative
unbalanced
Which of the following are examples of increasing friction intentionally? (check all that apply)
adding sand to an icy road
adding oil to an engine
wearing cleats for playing soccer
oiling a squeaky door hinge
Which object has less inertia than a tennis ball?
bowling ball
basketball
ping pong ball
soccer ball
T/F If there is no air resistance, you can drop a feather and a hammer from the same height and they will hit the ground at the same time.
True
False
The steeper the slope on a distance-time graph, the greater the ____.
speed
acceleration
distance
momentum
Which of the following are examples of decreasing friction intentionally? (check all that apply)
adding sand to an icy road
adding oil to an engine
wearing cleats for playing soccer
oiling a squeaky door hinge
The force you have to overcome to start an object moving is ____.
sliding friction
static friction
rolling friction
fluid friction
Match the graph with the story.
Tom walked slowly up the steep hill and rested once he reached the top. Then he walked quickly down the other side of the hill.
Tom ran from home to the bus stop and waited. He realized that he missed the bus so he walked home.
After the party, Tom walked slowly back home.
The skydiver's descent is slowed down because of ____.
gravity
mass
air resistance
acceleration
Why is it easier to move heavy objects on a cart rather than just sliding them?
rolling friction is easier to overcome than sliding friction
sliding friction is easier to overcome than rolling friction
static friction is easier to overcome than fluid friction
sliding friction is easier to overcome than static friction
What must happen in order for the plane to fly? (check all that apply)
drag must be greater than thrust
thrust must be greater than drag
weight must be greater than lift
lift must be greater than weight
What is the combination of all forces acting on an object?
balanced forces
net force
unbalanced forces
gravity
Match the graph with the story.
Tom walked slowly up the steep hill and rested once he reached the top. Then he walked quickly down the other side of the hill.
Tom ran from home to the bus stop and waited. He realized that he missed the bus so he walked home.
After the party, Tom walked slowly back home.
Which arrow represents the frictional force?
A
B
C
D
Which object has a greater effect on Earth's tides and why? (check all that apply)
the Sun
the Moon
because it's closer
because it has the most mass
Which law states that the acceleration of an object depends on the force exerted on it and its mass?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which law states that for every action there is an equal and opposite reaction?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which law states that an object at rest stays at rest and an object in motion stays in motion unless an unbalanced force acts on it?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Mary is riding in a car when the driver suddenly slams on the brakes. Mary is jerked forward out of her seat. This is an example of which law of motion?
Newton's 2nd Law
Newton's 1st Law
Newton's 3rd Law
A jellyfish swims through the water by pulling in water and then pushing the water back out in the opposite direction. This is an example of which law of motion?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which law is this picture an example of?
Newton's 1st Law
Newton's 3rd Law
Newton's 2nd Law
Which law is this picture an example of?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Explain what is happening in terms of Newton's 3rd Law.
Ron Swanson is in motion and will remain in motion until an unbalanced force is applied to the canoe.
Ron Swanson pushes the paddle backwards in the water and the canoe is propelled forward.
Ron Swanson applies a force to the canoe paddle and the canoe accelerates in the direction of the force.
A rocket is sent into space. When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which law is best represented by this picture?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Explain what is happening in terms of Newton's 1st Law.
The football is at rest and will remain at rest until the player applies a force to the ball.
The football will accelerate in the direction that the force is applied.
The football player pushes on the ball and the ball pushes back onto the player.
Newton's 2nd Law says the acceleration of an object depends on its _______ and ______. (Choose two answers)
force or applied force
weight
gravity
mass
What is the reaction force?
The feet push down on the floor.
The feet are in motion and will stay in motion.
The floor pushes up on the feet.
The feet are at rest and will stay at rest.
What is the reaction force?
Bat hits ball
Ball pushes back on bat
Ball is propelled forward
Ball tears apart
Explain what is happening in terms of Newton's 2nd Law.
The soccer player applies an unbalanced force to the ball and the ball continues to move until the net applies an opposing force to it.
The soccer player applies a force to the ball and the ball applies a force to his foot and he feels this as pressure.
The soccer player applies a force to the ball and it accelerates in the direction of the goal.
Which Law does this best represent?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
