WorksheetsForce and Motion Summative Test/Quiz
Total questions: 60
Worksheet time: 14hrs 17mins
What two things must you know to describe the motion of an object? CHOOSE TWO CORRECT ANSWERS!!
The direction an object is moving
The size of the object
The gravitational effect
how fast (speed) the object is moving
Standing on the Santa Fe High School plaza you observe a bird flying from tree to tree. The place on the plaza that you observe from is your
frame of reference
relative motion
distance
relative distance from bird
Motion in relation to a frame of reference is called relative motion.
True
False
Imagine that you are a passenger in a car.
The best frame of reference you could use to determine how fast the car is moving relative to the ground is_______
. the people sitting next to you in the backseat
the driver of the car
a van traveling in the lane next to your car
.a sign post on the side of the road
Distance is the length of a path between two points
FALSE
TRUE
Not enough information is given to determine whether or not this is distance.
the SI unit best suited for measuring the length of a room in your home.
kilometer
centimeter
millimeter
meters
Five blocks south is an an example of displacement
True
False
Neither
Which is NOT magnitude.
length
amount
size
direction
Compare and contrast distance and displacement.
Distance is the magnitude of a path between two points, whereas displacement is the direction from a starting point and the length of a straight line from the starting point to the ending point.
Distance is the speed of a path between two points, whereas Distance is the length of a path between two points, whereas displacement is the direction from a starting point and the length of a straight line from the starting point to the ending point.
Distance is the length of a path between two points, whereas displacement is the direction from a starting point and the length of a straight line from the starting point to the ending point.
A vector is a quantity that has both ______________ and _________
speed and velocity
distance and time
gravity and free fall
magnitude and direction
Define Speed
Speed is the ratio of the distance an object moves to the amount of time it moves S=D/T
Speed is the ratio of the time an object moves to the amount of distance it moves S=T/D
Neither of these answers are correct.
Which answer does NOT describe a change in velocity
A moving object gains speed
A moving object moves in a straight line at a constant speed.
A moving object changes direction
A moving object slows down
How do velocities combine
Velocities combine by vector multiplication
Velocities combine by vector division,
Velocities combine by vector subtraction
Velocities combine by vector addition.
6. A river flows at a velocity of 3 km/h relative to the riverbank. A boat moves upstream at a velocity of 15 km/h relative to the river. What is the velocity of the boat relative to the riverbank?
18 km/h downstream
12 km/h downstream
15 km/h upstream
12 km/h upstream
If a model train car with a momentum of 12 kg•m/s collides with a 2 kg model train car that is not moving, what is the total momentum of both cars after the collision?
0 kg•m/
6 kg•m/s
12 kg•m/s
24 kg•m/s
Complete the equation: Momentum =
Mass × Time.
Mass × Velocity.
Velocity × Time.
Mass ÷ Velocity.
The law of conservation of momentum states that,
in the absence of outside sources, the total momentum of objects that interact does not change
because of outside sources, the total momentum of objects that interact does not change
in the absence of outside sources, the total momentum of objects that interact changes.
because of outside sources, the momentum of an object before a collision is always less than the momentum of the object after a collision.
A student walked 2 km in .5 hour. What is his or her average speed on the way to school.
0.5 km/h
1.5 km/h
4.0 km/h
Which does not describe a change in velocity
A moving object gains speed.
A moving object changes direction
A moving object moves in a straight line at a constant speed.
How do velocities combine?
by vector addition
by vector subtraction
by vector graphing
A horse on a carousel that is moving at a constant speed is accelerating because
its direction constantly changes
its speed constantly changes
its height constantly changes
The rate at which velocity changes is called
acceleration
speed
gravitational constant
The equation used to calculate the acceleration of an object.
acceleration = change in velocity
acceleration = change in velocity/total time
acceleration = total time/change in velocity
When the final velocity is less than the initial velocity of an object, the acceleration is negative.
True
False
Neither
The measure of how fast a velocity is changing at a specific instant is known as
average acceleration
constant acceleration
instantaneous acceleration
What force causes a 1-kg mass to accelerate at a rate of 1 meter per second each second?
1 kg/m•s2
1 kg•m
1 kg/s
1 newton
The overall force acting on an object after all the forces are combined is the ______
balanced force
unbalanced force
gravitational constant
net force
When balanced forces act on an object, there is no change in the object’s motion because the net force is zero. When unbalanced forces act on an object, the net force is not zero, so the object accelerates
False
Neither
True
Friction is a force that helps objects that are touching move past each other more easily.
True
False
Which is not a type of friction
rolling
static
gravity
sliding
The friction force that acts on objects that are at rest is
dynamic friction
gravitational friction
static friction
Fluid friction is a force that opposes the motion of an object through a fluid such as water.
True
False
Gravity is
retroactive force the pushes objects apart
attractive force that pulls objects apart
attractive force that pulls objects together
Describe how gravity and air resistance affect the motion of a falling object
Gravity causes an object to accelerate upward, whereas air resistance acts opposite the direction to reduce acceleration.
Gravity causes an object to accelerate downward, whereas air resistance acts opposite the direction to increase acceleration.
Gravity causes an object to accelerate downward, whereas air resistance acts opposite the direction to reduce acceleration.
Terminal velocity is the constant velocity of a falling object when the force of air resistance equals the force of gravity.
True
False
Neither
The tendency of an object to resist change in motion
Mass
Inertia
Weight
The amount of matter an object contains as measured by its inertia
Mass
Weight
Fluidity
The force of gravity acting on an object
weight
mass
inertia
According to Newton’s first law of motion, an object’s state of motion does not change as long as the net force acting on it is zero.
False
True
The law of inertia states that an object in motion will eventually slow down and come to a complete stop if it travels far enough in the same direction
True
False
Neither True or False
Italian scientist who did experiments that helped correct misconceptions about force and motion
Aristotle
Puccini
Galileo
Newton
Scientist who studied in England and introduced several laws describing force and motion
Darwin
Aristotle
Cromwell
Newton
An ancient Greek philosopher who made many scientific discoveries through observation and logical reasoning
Plato
Pliny the Elder
Newton
Aristotle
According to Newton’s second law of motion, acceleration of an object depends upon the __________ of the object and the ___________ acting on it.
gravity , inertia
mass, net force
speed, distance
the formula used to calculate the weight of an object
Weight = Mass x Acceleration due to gravity
Weight = volume x Acceleration due to gravity
Weight = Mass x Inertia due to gravity
Since the Moon has about 1/4 the Mass of Earth , one would weigh __________ than on Earth
more
the same
it would vary due to the gravitational constant
less
The equal and opposite forces described by Newton’s third law are called ________ forces.
speed and direction
unbalanced and balanced forces
action and reaction
Which factors affect the momentum of a moving object. CHOOSE TWO ANSWERS!!
. mass
volume
shape
velocity
If two identical objects are moving at different velocities, the object that is moving faster will have _________ momentum.
the same
less
greater
It all depends on the attractive forces of Dark matter on the earth
Over extremely short distances, approximately how many times stronger is the strong nuclear force than the electric force of repulsion?
10
100
1000
10,000
Which is NOT one of the four universal forces.
Inertia
Electromagnetic
Weak Nuclear
Strong Nuclear
Gravitational
Is the following sentence true or false? Electromagnetic force is associated with charged particles
True
False
Neither True or False
Name the only two forces that can both attract and repel
Weak Nuclear and electric can both attract and repel
Weak Nuclear and Strong Nuclear can both attract and repel
Electric and magnetic forces can both attract and repel
Objects with like charges ____ one another
attract
repel
Objects with opposite charges ___________one another.
attract
repel
Which does NOT correctly describe magnets or magnetic forces.
Magnetic forces act on certain metals
Magnets have two poles, north and south
Two poles that are alike attract each other.
.Magnetic forces can both attract and repel.
Every object in the universe attracts every other object
Newtons Second Law of Motion
Galileo's constant
Newton's law of Universal Gravitation
The Dark Matter Paradox
The gravitational force between two objects depends on
gravity and inertia
earth, wind and fire
mass and distance
strong nuclear force
Is the following sentence true or false? Gravity is the weakest universal force, but it is the most effective force over long distances
Neither True or False it's all relative
False
True
The sun’s mass is much greater than the mass of Earth, so the sun's gravitational force is much _________ than that of Earth.
stronger
weaker
the same as
