Font size
WorksheetsChapter 3 Review
Total questions: 45
Worksheet time: 39mins
What is the definition of a scientific law?
An explanation of why things occur in nature
An explanation of what will happen under certain conditions
What is the definition of a scientific theory?
An explanation of why things occur in nature
An explanation of what will happen under certain conditions
True or false: Once a scientific theory gets more proof, it will become a scientific law.
True
False
What do we call a push or pull on an object?
a tug
a yank
a force
Which of the following are examples of "non - contact" forces (distance forces)
gravity
magnetism
friction
applied force
When the net forces acting on an object are 0 N, we say the forces are balanced and there will be no change in the motion of the object.
True
False
Calculate the net force acting on the box
30 N
10 N to the right
10 N to the left
Calculate the net forces acting on the airplane
740 N to the right
760 N to the right
900 N to the right
700 N to the right
The force that opposes motion between two surfaces that are touching
friction
gravity
magnetism
Which of the following are factors that can influence friction?
the mass of the object
the texture of the surfaces
the amount of surface area
all of these can influence friction
What is the name of the attractive force between all objects in the universe with mass?
friction
magnetism
gravity
mass
The gravitational force between two objects depends on what 2 factors?
the objects' masses
the friction between the objects
the distance between the objects
the speed of the objects
An object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force. Which of Newton's Laws of Motion states this?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
F=ma; Force = mass x acceleration
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
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
Which of Newton's Laws of Motion applies to the fact that the downward force of a rocket engine's blast causes the rocket to take off in the opposite direction?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which of Newton's Laws of Motion applies the fact that I was riding my bike very fast and flipped over the handlebars when I hit a curb and my bike stopped suddenly?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which of Newton's Laws of Motion applies to the fact that if I push an empty shopping cart and a full shopping cart with the same force, the empty one will accelerate faster?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
When an object moves in a circular path, the net force is called _______.
gravity
centripetal force
static friction
weight
Forces are measured in ________.
m/s
kg
m/s/s
Newtons
acceleration is measured in __________
m/s
kg m/s
m/s/s
Newtons
an objects weight is measured in __________
kg m/s
kg
joules
Newtons
momentum is measured in ________.
m/s
kg m/s
m/s/s
Newtons
Which of the following is not one of the 3 types of friction?
static friction
gravitational friction
sliding friction
rolling friction
Which scientific law states that if no external forces act on a group of objects, their total momentum does not change?
The Law of Conservation of Energy
The Law of Universal Gravitation
The Law of Conservation of Momentum
The Law of Inertia
The impulse on an object is equal to the change in its momentum
Impulse Momentum Theorem
Law of Conservation of Momentum
Law of Universal Gravitation
Newton's Second Law of Motion
Baseball players are told to swing through the ball, not stop the swing when they make contact because...
Newton's law states it would be hard to stop the bat in motion
more force is applied to the ball the longer the bat makes contact with it.
F=ma
when object's collide, their momentum is not conserved
Calculate the net force on this object
110N to the left
40N to the right
110N to the right
40N to the left
Which of the following statements describes momentum?
the product of body’s mass and velocity
the product of body’s mass and acceleration
the sum of body’s mass and velocity
the sum of body’s mass and acceleration
What type of quantity are momentum and velocity?
director
reactor
scalar
vector
What word can best describe the total momentum in an isolated system?
constant
large
lost
low
The total momentum of two objects before collision is 450 kgm/s. What will be their total momentum after collision?
0 kgm/s
175 kgm/s
350 kgm/s
450 kgm/s
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
When comparing the momentum of two moving objects, which of the following is correct?
the object with the higher velocity will have less momentum if the masses are equal
the more massive object will have less momentum if its velocity is greater
the less massive object will have less momentum if the velocities are the same
the more massive object will have less momentum if the velocities are the same
In a two-body collision,
momentum is always conserved
kinetic energy is always conserved
neither momentum nor kinetic energy is conserved
both momentum and kinetic energy are always conserved
If an object has a big mass, how will that effect it's momentum?
Make it smaller
It has no effect
Make it bigger
Which of Newton's laws is shown
1st law
3rd law
2nd law
This is Newton's 3rd law
True
False
This is Newton's 2nd law
True
False
An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe
2nd law
1st law
3rd law
If there is a big mass, it would need a stronger force to accelerate it. Which law does this describe?
3rd law
1st law
2nd law
What force slows objects down and keeps them from moving?
Acceleration
Gravity
Friction
Net Force
When there is a change in motion?
When forces are balanced
When the forces are unbalanced
Whe forces are equal
Never
