Intro to Motion

Displacement The vector of distance travelled Units= meters Xf= final displacement, where you end up Xi= initial displacement, where you start

Velocity V=x/t Units= meters/seconds How fast you are going Vf= final velocity, how fast you are going at the end of the movement. Vi= initial velocity, how fast you are going at the beginning of the movement.

Acceleration How much your velocity is changing. A=v/t Units = meters/seconds per second

Velocity Equation Vf=Vi+a*t This equation tells us how fast you are travelling after a certain amount of time.

Position Equation Xf=Xi+Vi*t+1/2*a*t^2 This equation gives us the final position after a movement. This equation can be rearranged to find vi, a, or t.

Free Fall The only acceleration acting on us as we fall is acceleration due to gravity. We can then use g=a in our equations. Vf=Vi+g*t Xf=Xi+Vi*t+1/2*g*t^2

Steps to solve a problem Know/ Want to Know Draw a picture