distance time and speed time graph quiz Flashcards
what is motion?
movement
what is speed? How do you calculate speed?
speed is the rate at which someone or something is able to move.
Speed= Distance/ Time
A boy runs 120m in 5 seconds. What is his speed?
120/5=24 m/s
what two variables do you need to know to calculate speed of object?
distance and time
Are velocity speed the same thing? if not how are they different?
No. Velocity has direection.
what does it mean if an object accelerates?
change in velocity
Car moving onto highway(getting faster)
Car over speed bump(slower)
Turning(changing direction)
these are all examples of what?
acceleration
what is the difference between positive and negative acceleration
positive-velocity is increasing
negative-velocity is decreasing
what is inertia?
tendency of an object to resist change in its motion.
how are mass and inertia related?
The more mass the more inertia. it takes more force to start(and stop) an object with a lot of mass.
are mass and weight the same thing
no. Mass is how much matters in an object.
what is gravity acting on the mass.
what is force?
a push or a pull
