Easy
What are reference points in regards to motion
something taht is not moving that can be used as a reference point for something that is
Give an example of a reference point
answers may vary
? Are you accelerating just by standing on Earth?
? What is static friction
friction acting upon an object in rest
What SI unit do you use to measure speed
m/s
What is distance
How far an object has gone
uThe change in position of an object
What is friction
a force that opposes motion between two surfaces that are in contact
? What is kinetic friction
friction acting upon an object that is moving
What SI unit do you use to measure acceleration
m/s^2
What is the equation to measure speed/velocity?
v=d/t
What is the equation used to measure acceleration?
a = change of v/t
Name some bad frictions for cars
answers will vary
Name some good friction for cars.
answers will vary
What is speed?
– how fast an object moves
What is velocity
the speed and direction of an object in motion
What is acceleration
the rate at which velocity changes over time
What is the difference between distance and displacement
Displacement MUST be in a striaght line while distance does not have to be
displacement is shorter than actual distance traveled
displacement must be in a particular direction
Why do people streamline their cars
to reduce air friction
When your moving inside another moving object
What is force
an action exerted on a body in order to change the body’s state of rest or motion
What are unbalanced forces?
When there is more force being exerted on an object so it iwll move
What is instantaneous speed?
uthe speed at any given point in time that that object is in motion; speed measured in an infinitely small time interval
What would the graph look like for acceleration if the speed is not changing?
Straight horizontal line
What are balanced forces?
when forces are equal so object will not move