Definitions
Kinematics is the study of how...
What is things move?
what three changes can cause an object to accelerate
velocity, time and position
Formula for displacement...
What is change in x=xf - xi
speed
scalar
same direction
add them
Frame of reference is...
What is coordinate system used to describe the motion of an object?
what is the acceleration for objects in free fall near the surface of the earth
9.81 m/s2
Formula for speed...
s=d/t
momentum
vector
if they are in the opposite directions
subtract them
The difference between distance and displacement is...
What is distance how far an object moves during a time interval and displacement; vecto, that describes a change in position?
give 2 examples of projectile motion
gun shooting bullet, throwing a ball...answers may vary
Formula for velocity...
v=change in x/change in t=xf-xi /tf -ti
displacement
if they are different dimensions
use pythagorean theorum, c2=a2+b2, after plugging in the numbers take the sqaure root
Difference between speed and velocity...
What is speed;scalar, rate of how an object moves and velocity; vector, rate of how an object changes positions
difference between scalar and vector
scalar only magnitude and size and vector is magnitude and direction
Formula for momentum...
p=mv
velocity and acceleration
vector vector
when does acceleration indicate an object is speeding up?
when velocity and acceleration are in the same direction
Difference between momentum and acceleration...
What is momentum, moving system that is = to velocity x mass and acceleration, rate of change in velocity
how do i find displacement of one dimensional movement (like on a number line) for an object that travels to multiple positions
find the distance between the first and last points
Formula for acceleration...
a=change in v/change in t
distance and centripetal acceleration
scalar vector
when does an acceleration indicate an object is slowing down
when velocity and acceleration are in opposite directions