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# Science Motion Test

### Science Motion

What is the formula for acceleration? Vf - Vs/Change in time
What is the speed formula? D/T
What is the distance formula? S x T
What is the time formula? D/S
What are the units for momentum? kg x m/s
What is the momentum formula? mass x velocity
What is velocity? the speed of an object and the direction of its motion
What is motion? a change in objects position relative to a reference point
What is speed? distance an object travels per unit of time
What is acceleration? rate in which velocity changes
What is displacement? the distance and direction of the objects change in position
What is momentum? the product of mass and velocity
What is a reference point? an object that appears to stay in place
If the tree is not moving what is the reference point? the earth
If the tree is moving what is the reference point? the sun, or outer space
Can a moving object be used as a reference point? yes
If police are chasing a runaway car, why is the velocity of the car important information to have? So you know the direction the car is going, and the speed of the car, so you can trap the car.
What is the independent variable for the car ramp lab? height of the ramp
What are 4 controls for the car ramp lab? 1. Ramp surface 2. Surface of ground car goes to 3. car 4. same distance
What is positive acceleration? acceleration in which velocity increases
What is negative acceleration or deceleration? acceleration in which velocity slowed down.
What is centripetal acceleration? acceleration that occurs in a circular motion, always changing direction
What are the three types of acceleration? negative acceleration, positive acceleration, and centripetal acceleration
Created by: cvils