WorksheetsUnit 2 Force and Interaction Review
Total questions: 65
Worksheet time: 1hrs 5mins
What is a force?
energy of movement
something that pushes or pulls
increasing speed
outside
What is NOT a way that an object can accelerate?
decreasing speed
change in direction
friction
increase in speed
What is speed?
The distance that an object travels in a given unit of time
the amount of matter in an object
quickness of motion
a push or a pull on an object
What is a force that causes an object to start moving, stop moving, or change direction
Acceleration
Unbalanced Force
Balanced Force
Inertia
What is a force that equals the forces acting on an object in the OPPOSITE direction
Acceleration
Unbalanced Force
Balanced Force
Inertia
What is the tendency of an object to resist changes in motion
Acceleration
Unbalanced Force
Balanced Force
Inertia
What is weight?
the force of gravity on a person or object at the surface of a planet
the amount of matter in an object
anything that has mass and takes up space
force that two surfaces exert on each other when they rub against each other
What is mass?
the force of gravity on a person or object at the surface of a planet
the amount of matter in an object
anything that has mass and takes up space
force that two surfaces exert on each other when they rub against each other
What is friction?
the force of gravity on a person or object at the surface of a planet
the amount of matter in an object
anything that has mass and takes up space
force that two surfaces exert on each other when they rub against each other
Newton's 2nd Law: Acceleration depends on an object's _____ and the _____ ________ acting on the object.
inertia
gross
force
inertia
net
force
mass
net
force
mass
gross
force
What is the strength or force that something has because it is moving
weight
momentum
acceleration
air resistance
What will have more force?
4 Crash dummies crash 4 cars. All the cars are going 20 mi/hr.
a golf cart (900 lb.s)
A van (3,100 lbs).
A Ford Ranger Pickup Truck (2,800 lb.s)
A Lamborghini model X (1,600 lb.s)
What will have more force?
Mr. McCrea dropped all of these things from the same height at the same time.
a marble
a baseball
a bowling ball
a beach ball
The forces are ___
balanced
unbalanced
The net force is
1000 N TO THE RIGHT
1000 N TO THE LEFT
ZERO
What is Motion?
A change in position relative to a point of reference, a change in speed, or a change in distance
An increase or decrease in the speed of an object
The rate of change in an object’s position
a force that acts on an object through direct touching
A position is always described using a....
Memory
Shoes
Point of reference
Car
Distance describes the amount of space between....
11 things or points
5 things or points
2 things or points
3 things or points
A blimp travels at 3 m/s for 1000 s. What distance does the blimp cover in that time?
500 m/s
9000
4500 m/s
3000 m
A dog walks outside to go the bathroom every day. If she walks outside at a speed of 3 meters per second and walks 150 meters before she uses the bathroom, how long does it take her?
90 seconds
188 seconds
50 seconds
2 minutes
An object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted on by an outside force is Newton's what law?
2nd Law of Motion
3rd Law of Motion
1st Law Of Motion
How can you describe the bird’s motion?
The bird flew toward the house.
The bird flew from the left of the tree to the right of the tree.
The bird flew away from the tree.
All of the above are correct
The greater the mass of an object....
The less the force needed to change the object
Nothing will happen to the object
The greater the force needed to change the object
What happens to the gravitational force between objects as the objects move closer together?
It has no pattern
It does not change
It increases
It decreases
According to Newton's first law of motion, a moving object that is not acted on by an unbalanced force will
change its momentum
eventually come to a stop
accelerate
remain in motion
More mass = More inertia
True
False
What law is best described
1st
2nd
3rd
law of motion
What law is best described
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
The Law of Inertia (1st law)
The Law of Acceleration (2nd law)
The Law of Conservation of Momentum
Action Reaction Law (3rd law)
What is Newton's 2nd Law?
F=ma
Every action has an equal and opposite reaction
An object at rest stays at rest, an object in motion stays in motion.
Friction
AN OBJECT WILL HAVE A TENDENCY TO RESIST CHANGE. THIS PROPERTY IS PROPORTIONATE TO THE OBJECT'S MASS.
INERTIA
FORCES
NET FORCE
APPLIED FORCE
5. Which of these forces is a CONTACT FORCE that requires one force to push or pull the other?
Frictional force that slows an object down.
Magnetic Forces that push two objects apart.
Gravity
Magnetic forces that pull two objects together.
Velocity is both speed and _________.
mass
direction
distance
motion
Magnetic forces and gravity are examples of _______________.
Contact Forces
Noncontact Forces
Velocity
Momentum
A rocket travels 500 meters in 5 seconds. What was the speed of the rocket?
300 m/s
200 m/s
100 m/s
50 m/s
Which of the following is NOT TRUE about friction:
Friction is a force that acts in the opposite direction of motion.
Friction slows objects down.
There is no friction on earth.
Friction on carpet is greater than friction on a bare floor.
Which of the following is not a change in velocity?
stop motion
change in direction
creating a noise
speeding up
In the diagram below, a girl sits on a sled and slides down a hill of snow. Which arrow represents the force of friction opposing the motion of the sled down the hill?
Arrow A
Arrow B
Arrow C
Arrow D
According to Newton's Third Law of Motion, if Mike pushes down on the springboard to being his dive, what is the reaction force?
Mike splashing into the water
The springboard pushing Mike into the air
The height of the water when Mike enters the water
The sound the board makes as he pushes into the air
Which of these examples best illustrates Newton's Second Low of Motion?
A 100 Ib boy has twice as much inertia as a 200 Ib boy.
A truck needs a more powerful engine than a small car.
A hockey puck slides easily across the ice.
A satellite stays in orbit for a long time.
Ana pushed on a big rock in her back yard. She was unable to get it to move because she did not -
apply enough force
have a good grip on the rock
have enough mass
weigh enough
Billy pushes his little brother on a sled through the snow. He then tries to push his father on the the same sled. He noticed that it was much harder to push his father. Which law is this an example of?
1st Law (Law of Inertia)
2nd Law (Law of Acceleration)
3rd Law (Law of Action-Reaction)
A falling object is pulled down by the earth. The earth is pulled up toward the object. Why doesn’t the earth move?
Only the earth has gravity.
The Earth has a very large mass and a small acceleration.
The Earth has a very small mass and a large acceleration.
Air resistance gets in the way.
A girl jumps forward off a boat. According to Newton's 3rd law of motion, what happens to the boat?
the boat also moves forward
the boat remains motionless
the boat moves backward
the boat moves backward and then forward
The diagram shows two men pushing a stalled car on a level road. What would happen if a third man also pushed the car and supplied an additional 420 N of force?
The car would move at a constant speed
The car would increase in speed
The car would decrease in speed
The car's motion would be unaffected
If a lizard can run 8 m across the water in 4 seconds, how fast is he traveling?
32 m/s
2 m/s
2 seconds
34 meters
A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction force is...
The grip of the player's hands on the ball
the air resistance of the ball
the force of the ball against the bat
What is the reaction force to a foot pushing down on the floor?
The foot going through the floor
The floor pushing back against the foot
The floor breaking to the foot
The image is an example of ..........
Friction
Force pairs
Motion
Balanced forces
