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WorksheetsQuiz #4 - Collisions / Newton's laws
Total questions: 94
Worksheet time: 56mins
These carts will collide.
Label the direction of motion for each and the forces acting on each cart.
A force can____________.
make an object move
make a moving object stop moving
slow an object down
all of the above
True or false: An object resting on the ground can move without force.
True
False
When you push or pull something, you are creating_________________.
weight
a speed
a force
a surface
Imagine you kick four balls with the same amount of force. Which one will go the farthest?
a 3 pound ball
a 5 pound ball
a 15 pound ball
a 25 pound ball
What does the force of gravity do to objects?
It makes them float
it makes them jump
it pulls them to the center of earth
it pushes them apart
An example of the force of gravity is-
a rocket flying through space
a ball falling to the ground after it has been thrown
a cloud moving across the sky
the Sun rising
What is Newton's First Law of Motion?
F=M X A
The Law of Inertia
Force means a push or pull
You must clean up Gail's classroom daily.
What is Inertia?
An object at rest will move and an object in motion will stop.
Objects are lazy.
An object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an outside force.
F=M X A
What is Newton's Second Law?
The law of Inertia
F= M X A
M= A X P
You should not speed in a car.
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
What is Newton's Third Law?
The law of Inertia
For every reaction, there is an equal and opposite formula.
For every action, there is a reaction.
For every action, there is an equal and opposite reaction.
What is the unit called that measures force?
Isaac
Newton
Yee
Kilogram
Which of Newton’s Laws explains a rocket’s movement during launch?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
Newton's Fourth Law of Motion
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 we put the same force on a bowling ball and a soccer ball, the soccer ball will move faster! Which law explains this?
1st
2nd
3rd
When you are running. your foot exerts force on the ground and the ground exerts force back onto you. Which of Newton's laws is represented
1st
2nd
3rd
There is a skateboard rolling and then Billy steps on it and it stops. What Law of motion is this?
3rd
2nd
1st
Which law explains that it would take more force to push the car than the lawnmower?
1st
2nd
3rd
What Newtons law does this picture represent
Newtons 1st law
Newtons 2nd law
Newtons 3rdt law
Newtons 4rth law
Sally jumps on her trampoline. She exerts a force on the trampoline and the trampoline exerts an equal but opposite force back on Sally. This represents
Law 1
Law 3
Law 2
Think about pushing a shopping cart and a car. If you apply the same amount of force to both, the shopping cart will travel fast, but the car will hardly move. To move the car yo would need a larger force. Which of Newton's laws is being represented?
1st
2nd
3rd
A soccer ball is sitting in the middle of a field. The ball will remain at rest until an outside force like a players foot or the wind acts upon it. Which of Newton's laws is represented by this?
1st
2nd
3rd
Which law states that objects at rest remain at rest and objects in motion continue to move unless acted on by a force?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which law is also called The Law of Inertia?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
What is the tendency of the motion of an object to remain constant for both speed and direction?
Acceleration
Distance
Inertia
Position
Which is easier to start moving?
An object with very little mass
Any object with a large amount of mass
Which has more inertia even though none of them are moving?
A car
A bicycle
A scooter
A bus
This law explains why you need a seatbelt when traveling in a speeding car that comes to a sudden stop.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Why is it more difficult for a big rig to come to a stop than a car when both are traveling down the interstate at 70 mph?
The big rig has less mass to overcome.
The big rig has more inertia to overcome.
The car has more inertia to overcome.
The car has more mass to overcome.
What is a measure of how fast something moves a particular distance over a given amount of time?
Direction
Position
Speed
Inertia
Where is time plotted?
X axis
Y axis
Which graph is showing a faster speed?
A
B
What is the formula for speed?
time divided by distance
time minus distance
distance minus time
distance divided by time
What is the formula for average speed?
total distance divided by total time
total time multiplied by total distance
total time divided by total distance
total distance minus total time
What is velocity?
Speed plus mass
Speed plus direction
Speed plus position
Speed minus mass
What is a change in motion caused by an unbalanced force acting on an object; a change in velocity?
Speed
Position
Acceleration
Which law is also called The Law of Force and Acceleration?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
If the mass of the object increases, what happens to acceleration?
It increases
It decreases
There is no change in acceleration
What happens to acceleration when the force on the object is increased?
It decreases
It increases
There is no change in acceleration
What law states that for every action there is an equal and opposite reaction?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
What happens when 2 identical objects collide while moving at the same speed?
They cancel each other out
They exert a force on each other and come to an immediate stop.
They exert a force on each other and bounce back.
Only one exerts the force and causes the other object to stop.
Which law supports the fact that when objects collide they exert a force on each other at the same time?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which of the following is an example of an unbalanced force?
When an object moves in a straight line, which statement is true?
when the object moves at a constant speed, the resultant force is zero
when the object accelerates, the resultant force is zero
when the object moves at a constant speed, the forward force is greater than the resistive force
the object requires a resultant force in order to move at a constant speed
Calculate the resultant force.
40N, Left
40N, Right
0N, Balanced
75N, Right
The sum of all forces acting on an object is
balanced.
unbalanced.
friction.
the net force.
A photograph of a bird perched on a fence post is shown.
Which description best identifies the action-reaction pair between the bird and the fence post?
Action: The force of the bird on the wires
Reaction: The force of the wires on the fence post
Action: The force of the wires on the fence post
Reaction: The force of the fence post on the bird
Action: The force of the fence post on the bird
Reaction: The force of the bird on the wires
Action: The force of the bird on the post
Reaction: The force of the fence post on the bird
An ice skater pushes off a wall and glides backwards for a few meters and then stops.
Which statement best describes an action-reaction force pair in this statement?
The friction of the ice decreases as the blade of the skate moves on the ice.
The wall pushes on the skater as the skater pushes on the wall.
The ice skates slow down, and the skater stops
The skaters exerts a force on the wall, and blade exerts a force on the ice.
Which Newton's Law best describes this statement, for every action there is an equal and opposite reaction?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
How is this an example of Newton's 3rd Law?
Only the ball is applying force to the soccer player's head.
Only the soccer player's head is applying force to the ball.
An equal force are being applied by the ball and the soccer player's head on each other.
Newton's 3rd Law of Motion states...
An object at rest will remain at rest unless acted upon by an outside force and causes a change in motion
Force is equal to the mass and acceleration of an object.
For every action there is an equal and opposite reaction.
An object in motion will remain in motion at a constant speed and same direction unless an unbalanced force causes a change in motion.
Which law best describes the following statement: when a tennis ball hits the ground, then bounces back up into your hand.
Law of Inertia
Law of Acceleration
Law of Action-Reaction
A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?
For every action there is an equal and opposite reaction.
Every mass exerts a force on every other mass.
An object at rest tends to stay at rest.
Friction opposes the motion of an object.
A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?
100 Newtons, same direction
100 Newtons, opposite direction
200 Newtons, opposite direction
200 Newtons, same direction
A semi truck and a Volkswagen (small car) traveling at the same speed have a head on collision. Which statement is correct?
The impact force is greater on the Volkswagen.
The impact force is greater on the semi truck.
The impact force is less on the semi truck.
The impact force is equal for both.
The rocket engines ignite and push the gases downward, what is the movement of the rocket?
The rocket moves upward
Mass of the rocket decreases
The gases cause a reduction in air resistance
The rocket moves downward
Newton's 3rd law says that when two objects interact, the forces between them will be (a) in magnitude
Newton's 3rd law says that when two objects interact, the forces between them will act in (a) directions
A student kicks a soccer ball. According to Newton's 3rd law, what is the "reaction" in this situation
The soccer ball flies off into the air
You can hear the soccer ball being kicked
The soccer ball exerts a force back on the student's foot
Other students chase after the soccer ball
The spartan shop sign hangs from the ceiling from chain. What forces act on the sign?
Normal
Tension
Gravity
Applied
Friction
The spartan shop sign hangs from the ceiling from chain. The earth pulls down on the sign. What is the 3rd law pair with the Earth's force?
The sign pulls down on the ceiling
The sign pulls down on the chain
The chain pulls up on the sign
The sign pulls up on the earth
A student stands on the floor. While standing on the floor, he pulls down on a weighted cable. What forces act on him?
Gravity
Tension
Friction
Air Resistance
Normal
A student stands on the floor. While standing on the floor, he pulls down on a cable attached to weights. If the "action" is him pulling down on the cable, what is the "reaction"
The weights are lifted up
He feels tired
His weight decreases
The cable pulls him up
A student does the leg press, which involves him pushing on a weighted platform. The force of his press equals the weight of the platform, and the forces act in opposite directions. Is this an example of a 3rd law pair?
Yes
No
A student drops a basketball onto the floor. According to Newton's 3rd law, why does the ball bounce?
The student dropped the ball
The earth pulls the ball down
The ball presses down on the floor
The floor presses up on the ball
A soccer ball breaks through a window. How does the force on the window compare with the force on the ball?
The ball experiences a greater force
The window experiences a greater force
The window and ball experiences forces equal in magnitude
A bug hits into the windshield of a car. How do the forces on the bug and windshield compare?
The force on the bug is greater
The force on the windshield is greater
The forces on the bug and windshield are equal in magnitude.
If a bug hitting into the windshield of a car is the "action," what is the reaction?
The car experiences an equal strength force from the bug
The bug goes SPLAT
The driver panics and needs to clean the windshield
When you jump, what causes you to move upwards?
You extended your legs gives you momentum upwards
You temporarily stop gravity, causing you to float upwards
You press yourself upwards into the air
The floor presses up on you
According to Newton's 3rd Law, when you want to walk, what makes you move forwards?
Normal force from you on the ground pushes you forward
The ground's normal force on you pushes you forwards
The ground's friction force on you pushes you forwards
Your friction force on the ground pushes you forwards
The moon orbits the Earth. What forces act on the Moon?
Air resistance
Normal Force
Tension Force
Gravity Force
Applied Force
The moon orbits the Earth. How do the forces on the moon and earth compare?
The moon experiences a greater force than the earth
The moon experiences a lesser force than the earth
The forces on the moon and earth are equal in strength
Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude but in the opposite direction to that of the first object.
Always true
Sometimes True
Always false
If the weight of a skydiver is balanced out by an upward force of air resistance on the skydiver then those two forces are equal in magnitude and opposite in direction.
These two forces form a 3rd law pair because they are equal in magnintude and opposite in direction.
These two forces do not form a 3rd law pair because they are equal in magnitude and opposite in direction.
These two forces form a 3rd law pair because they are two forces acting between the same two objects.
These two forces do not form a 3rd law pair because they are not two forces between the same two objects.
Which of the following choices identifies a 3rd law pair of forces? Check two.
A team of dogs pulls a sled across the snow at constant speed and friction from the snow acts on the sled.
You push a chair across the floor and the chair pushes back on you.
The Earth pulls you down with a gravitational force when landing on a trampoline and the trampoline surface pushes up on you.
You lift a bucket of sand from the ground and the bucket pulls down on your arm.
Which of the following choices identifies a 3rd law pair of forces? Check two.
A car pulls a trailer along the road and the trailer pulls back on the car.
A skydiver is pulled downward by the earth and the parachute acts upward on the skydiver.
You hit a volleyball with your hand, and the volleyball pushes back on your hand.
A fish is pulled from the water on a line and the earth pulls the fish downward.
You stand on the ground holding a snowball in the palm of your hand. Which below identifies a third law pair of forces in this situation?
The snowball pushes down on your hand and your hand pushes up on the snowball.
The earth pulls the snowball down, and your hand pushes up to oppose gravity.
The earth pulls you down, and the ground pushes you back up to oppose gravity.
You push down on the ground while standing on it, and the ground pushes back up on you.
