An object's change in position in relation to a reference point.
What is motion?
100
Another word for negative acceleration.
What is deceleration?
100
A push or pull that always acts on an object.
What is a force?
100
A force that acts against motion
What is friction?
200
Taught dogs to salivate to different senses.
Who is Ivan Pavlov?
200
These can be useful reference points.
What is a nonmoving object?
200
The rate at which velocity changes.
What is acceleration?
200
When the net forces equal 0 N.
What is are balanced forces?
200
A way to reduce friction.
Any of the following:
What are lubricants?
What is switching from sliding kinetic friction to rolling kinetic friction?
What is to use/create smoother substances?
300
Won two Nobel Prizes; one in Chemistry and the Nobel Peace Prize.
Who is Linus Pauling?
300
You would divide the total distance traveled by the total time to calculate this.
What is average speed?
300
An increase in velocity.
What is positive acceleration?
300
Causes an object to start moving.
What are unbalanced forces?
300
A way to increase friction.
Any of the following:
What is to make surfaces rougher?
What is to increase the forces pushing the surfaces together?
400
Discovered many stars and planets.
Who is William Fredrick Herschal?
400
A train travels 360 km in 4 h. Calculate average speed.
What is 90 km/h?
400
Two ways in which velocity can change.
What is speed and what is direction?
400
The net force when you combine a force of 2 N north with a force of 4 N south.
What is 2 N south?
400
Three types of friction we learned about in class.
What are static friction, rolling kinetic friction, and sliding kinetic friction?
500
First female doctor in U.S.A.
Who is Elizabeth Blackwell?
500
An object that appears to stay in place.
What is a reference point?
500
Acceleration in a circular motion.
What is centripetal acceleration?
500
The combination of all the forces acting on an object.
What is a net force?
500
Which of the following would NOT help you move a heavy object across a concrete floor: water, ball bearings, oil, liquid soap, foam rubber, or steel rods.