Show:
Measuring Motion
What is a Force?
Friction
Gravity
Vocabulary
100
A change in a moving object's speed or direction over time.
What is acceleration?
100
a push or a pull that always acts on an object.
What is a force
100
A force that always acts to oppose motion.
What is Friction?
100
A measure that does not change when an object's location changes.
What is mass?
200
An object that appears to stay in place that helps you deect motion in another object?
What is a reference point?
200
To produce a change in motion a force must be ____________.
What is unbalanced?
200
A mover put furniture on a dolly with wheels. This is an example of ___________ ___________ ____________.
What is Rolling kinetic friction?
200
A measure of gravitational force.
What is weight?
200
Acceleration is __________ _______ _______ __________ ____________.
What is the rate which velocity changes?
300
Dividing total distance traveled by the total time is how to calculated _____________ _____________.
What is average speed?
300
What is the force of an object when you combine a force of 10N north with a force of 5N south?
What is 5 N north?
300
Tires moving a car forward on the road is an example of how ___________ can be __________.
What is friction, helpful?
300
The gravitational pull is greater between two objects that ______________________________.
What is have greater masses or are closer together?
300
The force that acts upon objects from all directions.
What is net force?
400
The difference between speed and velocity.
What is velocity has direction and speed does not?
400
An unbalanced force can cause an object's motion to change by _______________.
What is changing speed or direction, stopping or starting motion.
400
Friction occurs because ______________.
What is the roughness of any object's surface?
400
The Law of Universal Gravitation says gravitational force is related to ________________ and ______________.
What are mass and distance?
400
The force of attraction between two objects.
What is gravity?
500
A hiker's velocity begins at 1.8m/s uphill and changes to 1.5m/s uphill. How do you know that the hike has negative acceleration?
What is His speed has decreased?
500
The gravitational force between 1 kg of lead and Earth is _____ the gravitational force between 1 kg of marshmellows and Earth.
What is the same as.
500
Friction increases as _________, _________ and__________ increase.
What are hills and valleys, mass?
500
A students has a weight of 420N on Earth. What is the student's weight on the moon? (Moon's gravity is 1/6 of Earth's gravity).
What is 70N?
500
To calculate acceleration you need to know _________, ____________, ______________ , and ________________.
What is starting velocity, final velocity, and time it takes to change velocity?