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20 questions
If you ride your bicycle down a straight road for 500 m then turn around and ride back, your distance is ____ your displacement.
can't determine
equal to
less than
greater than
Which of the following conditions demonstrates ZERO acceleration?
The car turns a corner.
The car slows from 80 km/hr to 35 km/hr.
A car moves at 80 km/hr on a flat, straight highway.
The car speeds up from 35 km/hr to 80 km/hr.
What is the slope of a line on a distance vs. time graph?
speed
force
displacement
acceleration
Motion is a change in ___.
speed
velocity
position
time
When the forces acting on an object are _____, the net force is zero.
doubled
unequal
unbalanced
balanced
Inertia varies depending on an object's:
force
mass
velocity
motion
This is the force that opposes the sliding motion of 2 surfaces that are in contact:
speed
velocity
friction
acceleration
3 m/s North is an example of a(n) ____.
position
speed
acceleration
velocity
If you ride your bike up a hill, then ride down the other side, your acceleration is ____.
first negative, then positive
first positive, then negative
all positive
all negative
A horizontal line on a velocity/time graph shows ____ acceleration.
negative
positive
zero
changing
Which term best describes the forces on an object with a net force of zero?
acceleration
balanced forces
inertia
unbalanced forces
Two cars are traveling along the same road at the same (positive) speed but at different velocities. Explain.
One of the cars is moving backwards.
The two cars are traveling in the same direction.
Two cars cannot travel at the same speed but different velocities.
The two cars are traveling in different directions.
Why is it necessary to wear a seat belt to hold you in place if you are riding in a car that stops suddenly?
A seat belt increases your inertia so you move backwards if a car stops suddenly.
You don't need to wear a seat belt to hold you in place if a car stops suddenly- your body will not move if the car is stopped.
A seat belt helps to minimize injury from the inertia that keeps your body moving forward.
None of the responses are correct.
If you are running and you stub your toe, you fall forward. WHY?
Your foot stops, but the inertia of the rest of your body keeps it going forward.
Your foot does not stop, and your body has positive acceleration.
Your foot stops, but has negative acceleration on the rest of your body.
Your foot does not stop, you have balanced forces.
A car has an acceleration of –5 m/s2. Describe the car’s motion.
The car is speeding up at the rate of 5 m/s every second.
The car is slowing down at the rate of 5 m/s every second.
The car is moving backwards at the rate of 5 m/s every second.
The car cannot accelerate because the number is negative.
If you roll a ball up a hill, it undergoes ______ acceleration.
positive
zero
negative
None of the responses are correct.
This opposes the motion of objects that move through the air:
air resistance
balanced forces
terminal velocity
None of the responses are correct.
Acceleration is rate of change of ____.
force
position
time
velocity
The speed you read on a speedometer is ____.
average speed
instantaneous speed
constant speed
velocity
Displacement includes:
direction only
distance only
BOTH speed and velocity
BOTH distance and direction
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