motion
Card Set Information
Author:
kimkrak
ID:
111867
Filename:
motion
Updated:
2011-10-24 19:20:02
Tags:
science
Folders:
Description:
speed, mass, velocity, etc.
Show Answers:
acceleration
final speed-initial speed
___________________
time
momentum
massXvelocity
p=m*v
speed
distance
______
time
avg speed
total distance
___________
total time
what is velocity and how do you find it?
the speed and direction of an object
final speed-initial speed
what is the measure of inertia?
the tendency an object has to resist change in its motion
what does the law of conversation of momentum state
the total momentum of objects that colide is the same before and after the collision
if you 100m in 25s. later you run the same distance in less time what happened to your average speed ?
you average speed is 4m/s
the amount of matter in an object
mass
the speed of an object at one instant of time is
instintanious speed
the tendency of an object to resist change in its motion
inertia
a change in speed or direction of an object
acceleration
the measure of difficult to change the speed or direction of an object
momentum
the speed and direction of an object
velocity
the distance travled divided by the amount of time taken to travel the distance
speed
what is the momentum of a car with a mass of 500kg traveling north at 15m/3
500*15=7500kg*m/s
you travel to a city 400 km away in 3hr.what is your average speed
400
___ =133.3km/hr
3
the speed of a train increases from 200km/hr to 300km/hr in 10min.what is acceleration?
300-200 100
_______ = ___=10km/hr
10 10