Chapter 2: Kinematics (1D) Translational Motion and Rotational Motion Today Later

Describing Motion … Coordinates  Position (displacement)  Velocity  Acceleration a) Motion with zero acceleration b) Motion with non-zero acceleration

Velocity Slope is average velocity during t=t2-t1 Slope is instantaneous velocity at t1

Acceleration

Ex2-3: Engine traveling on rail

Kinematics equations for constant acceleration

Testing Kinetics for a=9.80m/s2

1-D motions in the gravitational field

All objects fall with the same constant acceleration!!

Problem: 83 Stone is thrown vertically upward

Problem 80: A falling stone

Problem: 85 Should you stop??

Problem 87: Golf on a hill