Show:
Measuring Motion
Acceleration
Motion and Force
Friction
Significant Figures
100
The net change in an object's position.
What is displacement?
100
The change in velocity over time.
What is acceleration?
100
Any action that changes an object's state of motion or rest.
What is a force?
100
Static friction is defined as.
What is the friction preventing motion from starting?
100
12
What is two?
200
A stationary object which motion can be measured from.
What is a reference point?
200
Acceleration can be a change in speed or a change in this.
What is direction?
200
If two forces acting on an object have a net force of zero, they are...
What is balanced?
200
Kinetic friction is defined as.
What is the friction between two surfaces moving over each other?
200
13,800
What is three?
300
The two ways speed can be determined.
What is mathematically or graphically?
300
The two ways to determine acceleration.
What is mathematically or graphically?
300
If two forces have a net force of anything other than zero, they are...
What is unbalanced?
300
The larger friction value between kinetic and static friction.
What is static friction?
300
1,000,000.00
What is nine?
400
The difference between speed and velocity.
What is that velocity has direction?
400
Robert's acceleration if in 45 seconds he accelerated from 12.7m/s to 102.7m/s.
What is 2.0m/s^2?
400
The interaction between two surfaces that are in contact.
What is friction?
400
These substances are used to decrease the amount of friction between two surfaces.
What is lubricants?
400
0.0008750
What is four?
500
Jeff's velocity if he walked 105 meters in 35 seconds.
What is 3.0m/s?
500
The acceleration of a flowerpot rolling down the road for 32 seconds if it starts with a speed of 32m/s and comes to a complete stop.
What is -1.0m/s^2?
500
Acceleration only occurs when there is a net force...
What is not equal to zero?
500
Provide an example of when you would want to reduce friction and one example of when you would want to increase friction.
Reduce: ball bearings, hinges, cars. Increase: washing dishes, icy roads, baseball gloves.
500
1,360,895,000
What is seven?