Kinematics

Equations for Constant Acceleration x = x0 + v0t + 1/2 at2 v = v0 + at v2 = v02 + 2a(x-x0) x = v0t + 1/2 at2 v = at v2 = v02 + 2a x 10

Example: Braking car A car is traveling 30 m/s and applies its breaks to stop after a distance of 150 m. How fast is the car going after it has traveled ½ the distance (75 meters) ? 18

Example: ball thrown up Vo=25m/s Find time to go up: Find max height

Example: ball thrown up Vo=25m/s Find time to come down: Find velocity right before it hits ground

Example: ball thrown from cliff Find velocity right before it hits ground Vo=25m/s 60m Find total time in air

Example: ball thrown from cliff Find velocity 30m above ground Vo=25m/s 60m

Summary of Concepts Constant Acceleration x = x0 + v0t + 1/2 at2 v = v0 + at v2 = v02 + 2a(x-x0)