MOTION
Is how to calculate the average speed,
a) add distance and time
b) subtract the total amount of distance and by the total amount of time
c) add speed plus direction
d) divide the total amount of distance by the total amount of time
What is d) divide the total amount of distance by the total amount of time?
A measure of the motion of a body equal to the product of its mass and velocity
a) momentum
b) constant speed
c) velocity
d) net force
What is a) momentum ?
An electric field is created by particles that
A)are moving.
B)have a charge.
C)are radioactive.
D)are electrically neutral.
What is B) have a charge ?
The acceleration of an object would increase if there was an increase in the
A)mass of the object.
B)force on the object.
C)inertia of the object.
D)friction on the object.
What is B) force on the object?
Inertia varies depending on
a) velocity
b) motion
c) mass
d) force
What is c) mass?
This is a graph of no motion?
a) a horizontal line
b) the slope of the line increasing steadily
c) the slope of the line decreasing steadily
d) the line of the graph would increase and decrease.
What is a) a horizontal line?
A ____________ is a push or pull that causes an object to change its motion.
a) force
b) change
c) kinetic
d) compound
What is a) force ?
When you kick a soccer ball it has __________ energy.
a) kinetic
b) potential
c) mechanical
d) chemical
What is a) kinetic ?
The unit of momentum is
a) kg x m
b) kg x m/s
c) kg x m/s^2
d) m/s^2
What is b) kg x m/s??
The SI unit that is used to measure time is the
a) second
b) minutes
c) hours
d) days
What is a) second ?
This is a graph of constant speed
a) a horizontal line
b) the slope of the line would increase. It would be a straight line.
c) The slope of the line would decrease.
d) The slope of the line would increase, decrease, and then become horizontal.
What is a) a horizontal line?
Energy is the ability to do ________.
a) nothing
b) potential
c) inertia
d) work
What is d) work ?
The upward force of an object falling through the air is
a) inertia
b) air resistance
c) momentum
d) terminal velocity
What is b) air resistance ?
If gravity did NOT affect the path of a horizontally thrown ball, the ball would ____.
a) go straight up
b) fall straight down
c) follow a curved path
d) travel horizontally
d) travel horizontally
More massive objects have a large gravitational force or weight. Why do heavier objects accelerate to the ground at the same rate as lighter ones?
A)Smaller objects have more inertia.
B)More massive objects have less inertia.
C)All objects have the same pull of gravity on them.
D)Heavier objects need a greater force to accelerate according to F=ma.
What is D) heavier objects need a greater force to accelerate according to F=ma ?
The average speed of a car that went 100 miles in 2 hours.
a) 50 km/hour
b) 200 miles/hour
c) 50 miles/hour
d) 100 km/hour
What is c) 50 miles/hour?
A.) Unbalanced Force
B.) Change in velocity
C.) Newton's 3rd Law
D.) gravity and air resistance
What is a) unbalanced force?
The path of a projectile is
a) curved
b) always horizontal
c) always vertical
d) straight
What is a) curved?
The statement "to every action there is an equal and opposite reaction" is ____.
a) The law of conservation of momentum
b) Newton's first law of motion
c) Newton's second law of motion
d) Newton's third law of motion
What is d) Newton's third law of motion?
An example of ______ is 3 m/s north
a) position
b) speed
c) velocity
d) acceleration
What is c) velocity ?
This is the type of force that happens when objects rub against each other
a) magnetic force
b) contact force
c) gravitational force
d) frictional force
What is d) frictional force?
_____________ is the tendency of an object to keep moving or stay at rest.
a) friction
b) force
c) inertia
d) gravity
What is c) inertia?
The size of the gravitational forces between two objects depends on their
a) frictional forces
b) inertia
c) masses and distance between them
d) speed and direction
What is c) masses and distance between them?
The net force applied to a 5.5 kg box pushed across the lunch table with the acceleration of the box of 4.2 m/s^2.
A)1.3 N
B)1.31 N
C)9.7 N
D)23.1 N
What is D) 23.1 N ?
Your acceleration if you ride your bike up a hill, then ride down the other side where up is positive.
a) all negative
b) first positive, then negative
c) first negative, then positive
d) all positive
What is b) first positive, then negative?