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WorksheetsScience 9 Unit 2: Forces Review
Total questions: 52
Worksheet time: 1hrs 10mins
Which is the following is not a factor in calculating momentum?
mass
direction
acceleration
speed
If you divide momentum by velocity, the result is the value of the object's
mass
direction
energy
speed
Whenever an object is standing still, the value(s) that are always zero are
speed
velocity
momentum
all of the above
What are the S.I. units for mass?
lbs
g
kg
Newton
What are the S.I. units for momentum?
kg/ms2
kg*m/s
m/s
m/s2
Weight is best described as
an object's resistance to acceleration
what causes an object to fall
the downward force exerted on objects due to gravity
the force solely dependent on an object's mass
The law that states that every object maintains constant velocity unless acted upon by an unbalanced force is
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
The law of conservation of momentum
The law that states for every action force there is an equal and opposite reaction force is
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
The law of conservation of momentum
The law that states that the unbalanced force acting on an object equals the object's mass times its acceleration is
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
Law of conservation of motion
What is the S.I. unit of force?
Newton
Einstein
Pascal
Curie
What unit is used to measure acceleration in the free fall (acceleration due to gravity)?
m/s
m/s2
m2/s2
m
Which of the following equations is correct?
w = mg
w = m/g
w = ma
w = mv
Which object does not have momentum?
a fish swimming in a pond
a feather falling to the ground
a rock by the side of the road
a boulder rolling down a hill
What is the reaction force when you place a cup on the table?
the force of the cup on the table
the force of the table on the cup
the force of gravity on the cup
the force of gravity on the table
Earth pulls on the moon and holds the moon in its orbit. The moon pulls on Earth with an equal and opposite force. This is an example of
Newton's first law
Newton's second law
Newton's third law
Law of conservation of momentum
If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision?
Newton's second law
Newton's third law
Law of conservation of momentum
Law of universal gravitation
In the absence of air resistance, how would the acceleration of a 1.6 kg book and the acceleration of a 160 kg rock differ if the objects were dropped from the same height?
The book would accelerate faster than the rock.
The rock would accelerate faster than the book.
The book and the rock would accelerate at the same rate.
What happens immediately after a skydiver opens his/her parachute?
Air resistance greatly increases
The skydiver is in free fall
The skydiver's speed greatly increases
The force of gravity greatly increases
Mass times velocity equals
acceleration
force
momentum
speed
According to Newton's second law of motion, force is the product of mass and
speed
velocity
acceleration
momentum
The tendency of an object at rest to remain at rest, or if moving, to continue moving at a constant velocity is
inertia
momentum
orbital motion
projectile motion
Which has the most inertia?
a pencil
a shoe
a toothpick
a car
The motion of an object resulting from only the force of gravity is
terminal velocity
free fall
inertia
momentum
The value for acceleration of objects in free fall near Earth is
9.8 m/s2
6.674 x 10-11 N*m2/kg2
3.14
Which law tells us how much an object's speed will be increased or decreased by an unbalanced force?
Newton's first law
Newton's second law
Newton's third law
Law of conservation of momentum
What is the definition of mass?
The amount of matter in an object
The force on an object due to gravity
When two marbles collide, the total change in momentum of the marbles is
increased
decreased
zero
When the same force is applied to two objects with different masses, the acceleration of the objects will be
the same
different
zero
What property of an object varies according to the gravitational force it experiences?
weight
matter
mass
A person’s body is thrown outward as a car rounds a curve on a highway.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
None of them
Why does a semi truck have more momentum than a car if they are both traveling at 60kph?
Truck is more massive
Truck is less massive
Car is moving faster
Car is more massive
If a car is moving at 2 kg m/s and crashes into a stationary car, how much momentum would transfer over to the stationary car?
all of the momentum
half of the momentum
a little bit of the momentum
zero momentum
Which type of friction is shown in the picture?
rolling
fluid
static
sliding
Which type of friction is shown in the picture?
fluid
static
rolling
sliding
Which type of friction is shown in the picture?
rolling
static
fluid
sliding
Air resistance is a type of fluid friction.
True
False
Rolling friction is when an object ___________ over a surface.
bounces
rolls
slides
_____________ friction acts on objects that are not moving.
sliding
rolling
static
fluid
Sliding friction is when two _____________ surfaces slide over one another.
liquid
gaseous
solid
