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WorksheetsISAT Standard PS 2 - Motion and Stability
Total questions: 70
Worksheet time: 1hrs 14mins
When an unbalanced force acts on an object, the force ______________________.
changes the motion of the object
is cancelled by another force
does not change the motion of an object
is equal to the weight of the object
When two equal forces act in opposite directions on an object, they are called ______________________.
frictional force
balanced force
centripetal force
gravitational force
The resistance of an object to any change in its motion is called ______________________.
inertia
friction
gravity
weight
According to Newton’s second law of motion, force is equal to mass times ______________________.
inertia
weight
acceleration
direction
The picture is an example of Newton's...
1st Law
2nd Law
3rd Law
"Forces come in pairs" represents
Newton's 1st law
Newton's 2nd law
Newton's 3rd law
Law of conservation of momentum
A unbalanced force means that an object is
zero net force
changing its motion
sitting still
object at rest
A 10 kg, 15 kg, and 20 kg rock are rolling down a hill. Which rock will require the most force to stop?
10 kg rock
15 kg rock
20 kg rock
All 3 rocks will require the same force
The air is let out of a balloon and it flies around the room. Which of Newton's Laws is this?
1st Law
2nd Law
3rd Law
A car accelerates faster than a semi-truck. Which of Newton's Laws is this?
1st Law
2nd Law
3rd Law
A person pulls a tablecloth from underneath a plate and it does not move. Which of Newton's Laws is this?
1st Law
2nd Law
3rd Law
A full grocery cart requires more force than an empty cart. Which of Newton's Laws is this?
1st Law
2nd Law
3rd Law
Which of the following is the correct position - time graph for an object moving with a constant velocity?
Looking at the image. Decide if this is balanced or unbalanced.
Unbalanced
Balanced
Looking at the image. Decide if this is balanced or unbalanced.
Unbalanced
Balanced
What is the net force in this example?
200 N left
125 N right
50 N left
75 N right
If a person is picking up a book with the force of 50 N and the gravity is pulling down with 15 N, what is the net force?
50 N dup
35 N up
65 N up
35 N down
Is the Net Force balanced or Unbalanced?
Balanced
Unbalanced
Mrs. King and Mr. King decided to move a dresser across the room. They both stood on the same side and pushed left with a total of 30N of force, although there was 10N of friction. What is the net force and direction?
40N Left
30N Left
20N Left
10N Left
A notebook is on a desk. The force of gravity pulling the notebook down on the table is 10 N. The force of the table (normal force) pushing back up on the notebook is 10N. What is the net force?
20N
0N
15N
100N
Atoms That have a positive charge will be attracted to atoms with a ______________ charge.
positive
negative
no charge
What forces works only by combining electric and magnetic forces?
electric
magnetic
static electricity
electromagnet
This force occurs when ions create attractive and repulsive forces.
Electric Current
Magnetic Force
Electromagnet
Magnetism
This force occurs when there is an attractive and repulsive force between two poles.
Electric
Electromagnetism
Magnetism
Static Electricity
In a magnet the opposite poles will
Attract
Repel
Neither
Like poles will
Attract
Repel
Neither
The magnetic field of a magnet is ____________ further away from the magnet.
Smaller
Stroner
Larger
Weaker
Electric charges that do not move through a current are known as
Electricity
Static Electricity
Magnetism
Electromagnetism
When electrons flow through wires from a - terminal to a + terminal a/an ___________ is created.
Flow
Electromagnet
Current
Magnet
The area around an electric charge that experiences the force exerted by the electric charge.
Electric Field
Magnetic Field
Electric Force
Magnetic Force
What is this image showing.
Electric Current
An Electromagnet
Magnetic Force
Magnetic Field
How could I increase the strength of my electromagnet?
More Batteries
Smaller paper clips
More loops of copper wire
Larger Nail
When electrons all spin in the direction, they create an invisible force known as_______
Electricity
Magnetism
Static Electricity
Electromagnet
What will happen if the north ends of two magnets are placed near each other?
They will attract each other.
Both magnets will get weaker.
They will repulse (repel) each other.
Nothing will happen.
How can the strength of an electromagnet increase?
Remove the core, leaving only the coils of wire.
Add more loops (coils) of wire around the core.
Remove the battery.
Remove loops (coils) of wire from around the core.
Students want to investigate how the amount of electric energy delivered to a motor affects its speed. Which of the following procedures will most likely produce the data students need to answer their question?
Measure the rotations per second of a motor when it is connected to one battery, two batteries, and three batteries.
Add larger and larger motors to a battery to determine the size of the largest motor the battery is able to run.
Closely observe the rotation of the motor to see if the direction of spin reverses when the poles of the battery are switched.
Connect a series of motors to the same battery to figure out how many motors can be run off the same battery.
The table provided shows data collected by students during an investigation of two electromagnets.
(See Attached Diagram)
Which of the following conclusions is supported by data on the table?
When two electromagnets are of like charges, they attract each other.
Electromagnets that repel each other have more force than those that attract each other.
The greater the charges of two electromagnets, the greater the size of the force.
If the charge on one magnet is positive, the charge on the other must be negative.
This table shows the magnitude of electromagnetic force exerted by two electromagnets on each other as the distance between the two electromagnets is varied.
(See Attached Diagram)
The data on the table provide evidence for which of the following conclusions?
The force between any two magnets is always constant, regardless of distance.
As distance between electromagnets increases, the electromagnetic force also increases.
The smaller the distance between two electromagnets, the greater the force.
The force between two magnets depends only on the charge of the electromagnets.
As the magnets get farther apart, the strength of the fields get.....
Weaker
Stronger
Stay the same
If electrons transfer from a wool square to a pvc wand, the wool becomes ______________ and the wand becomes_____________.
Positive, Positive
Positive, Negative
Negative, Positive
Negative, Negative
Which of the following forces is attractive but never repulsive?
Gravitational Force
Electric Force
Magnetic Force
Electromotive Force
Which of the diagrams shows the least gravitational force?
I
II
III
IV
Electrical conductors have ____ resistance to the movement of electrons.
High
Low
What is a material through which electrons cannot move easily?
Conductor
Insulator
Magnet
Circuit
Moving a magnet near a compass can cause the compass needle to move, even though the magnet does not touch the compass. This observation is evidence for which characteristics of magnetic fields?
There is a north and south pole on a magnet.
Fields can exert non-contact forces.
Magnetic fields do not exist.
Which choice best describes a gravitational field?
A force that pulls people to the Earth.
A bend in the space-time continuum that attracts masses together over a distance.
A force that attracts oppositely charged particles.
A bend in the space-time continuum that can attract and repel objects.
Bob and Suzy are designing an electromagnet. Bob wants to add another battery to make the magnet stronger, and Suzy wants to add more coils to make the magnet stronger. Who is correct?
Bob
Suzy
Neither Bob nor Suzy
Both Bob and Suzy
Which item could NOT be used as a core in an electromagnet?
Wooden pencil
Steel bolt
Cobalt cylinder
Nickel pen
Which choice below shows a difference between gravitational fields, electrical fields, and magnetic fields?
Gravitational fields are invisible, electrical and magnetic fields are visible.
Gravitational fields can attract and repel, electrical and magnetic fields cannot.
Gravitational fields involve positive and negative charges, electrical and magnetic fields involve poles.
Gravitational fields can only attract, electrical and magnetic fields can both attract and repel.
The amount of matter in an object and the pull of gravity on that object are two different things called...
Velocity and volume
Mass and weight
Gravity and mass
Velocity and weight
Which image below best represents the forces acting on the Earth due to the Sun's gravitational field?
