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50 questions
a=Fnet/m
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
What pulls a ball back to earth?
Gas
Gravity
Friction
Molecules
A force of 90N is applied to each cart below, which one will have the biggest acceleration?
Cart 1
Cart 2
Cart 3
Cart 4
Which would fall with greater acceleration in a vacuum—a leaf or a stone?
the leaf
the stone
They would accelerate at the same rate.
It is difficult to determine without more information.
Acceleration of an object is directly proportional to the mass of the object.
True
False
The reason a tennis ball and a solid steel ball with the same diameter will accelerate at the same rate in the absence of air resistance, is that
they have the same mass
the ball that experiences the larger force also has the smaller mass
the ball that experiences the larger force also has the larger mass
the force acting on them is the same.
Mrs. Renner's stress apple weighs 3N. When held at rest in her hand, the net force on the apple is
0 N
0.3 N
3 N
30 N
A person is standing on a skateboard. A constant force on the person produces
constant velocity
constant acceleration
both constant velocity AND acceleration
neither constant velocity nor acceleration
Net force determines
motion
change in motion
What is the property that describes an object's resistance to a change in motion?
gravity
inertia
force
friction
Inertia is a force
True
False
Inertia refers to _____ (Select all that apply)
the tendency of moving objects to remain in motion
the force which keeps moving objects in motion with a constant velocity
the force that keeps stationary objects at rest
the tendency of stationary objects to remain at rest
List the objects in order from least to greatest inertia.
CDBA
ABCD
BCDA
CBAD
Which of the following energy forms is the sum of kinetic energy and all forms of potential energy?
Total Mechanical Energy
Nonmechanical Energy
Sum Energy
Elastic Potential Energy
On a roller coaster, where is maximum gravitational potential energy?
At the bottom of a big hill
When going around a corner
When going upside down
At the top of a big hill
Consider a pendulum swinging back and forth. At a specific point in time, the above bar chart is seen. What can you tell about the pendulum?
The bob is at the very bottom of its swing.
The bob is at the very top of its swing.
The bob is half-way between the top and the bottom.
The bob is close to the top of its swing
The bob is close to the bottom of its swing.
If your cup of hot chocolate is really hot that means it has a lot of this type of energy.
Chemical
Thermal
Electrical
Potential
A wind-up toy has a spring that stores energy when it is wound up gently. When the toy is released, elastic potential energy transfers into ____________ energy.
electrical
kinetic
potential
light
If you pick up a skater and place her on the ramp at 6 meters and there is a little friction involved, about how high on the other side could she go?
8 meters
0 meters
4 meters
6 meters
As the skier goes down the hill, his speed _______
Increases
Stays the same
Decreases
Kinetic; Elastic
Which of the following matches the energy bar chart pictured?
If an object has a mass of 250 kg, what is its mass on the moon?
250 kg
2450 kg
2450 N
400 kg
400 N
Which is correct?
speed = change in position x time
speed = speed divided by time
speed = change in position divided by time
Speed = time x speed
Suppose a minivan is moving in a straight line and steadily increases it speed. The speed changed from 35 km/hr to 40 km/hr the first second, 40 to 45 the next second. What is the minivan's acceleration?
10 km/hr/s
35 km/hr/s
5 km/hr/s
40 km/hr/s
It is possible for two objects to have the same speed but different velocities.
true
false
Average speed is inversely proportional to
displacement
time
acceleration
distance
Acceleration is
the rate at which the stop light is changing
the rate at which speed is changing
the rate at which position is changing
the rate at which velocity is changing
If you are moving in a positive direction, a negative acceleration means:
slowing down
speeding up
constant speed
If you are moving in a positive direction, a zero acceleration means
speeding up
slowing down
constant speed
If you are moving in a negative direction, a positive acceleration means
slowing down
speeding up
constant speed
Describe the car's motion (assume to the right is positive).
The car moves with a rightward velocity and a rightward acceleration.
The car moves in the rightward direction with a leftward acceleration.
The car moves with a constant, leftward velocity.
The car moves in the leftward direction with a leftward acceleration.
Describe the car's motion (assume to the right is positive).
The car moves with a rightward velocity and a rightward acceleration.
The car moves in the rightward direction with a leftward acceleration.
The car moves with a constant, leftward velocity.
The car moves in the leftward direction with a leftward acceleration.
What does the slope of a position vs time graph represent?
Velocity
Acceleration
Postion
What is the slope of this position vs time graph?
5 m/s
10 m/s
10 m/s2
5 m/s2
Use the graph above and pick the most accurate description of the object's motion
object is moving at constant speed
object is speeding up
object is at rest
object is slowing down
In the position vs. time graph, what type of motion does the line represent?
Acceleration
No motion
Deceleration
Constant Velocity
This chart represents the velocity of a bicycle over time. Select the correct statement regarding the bicycle's movement.
The bicycle has constant velocity.
The bicycle has constant speed.
The bicycle is accelerating.
The bicycle has 0 acceleration.
In the position vs. time graph, what type of motion does the line represent?
Acceleration
No motion
Deceleration
Constant Velocity
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