ANGULAR VELOCITY AND ACCELERATION | 6.1

θ

Use **** as coordinate for rotation

positive

Specify sense of DIRECTION | CCW

negative

Specify sense of DIRECTION | CW

radians

We measure angle by

angular position formula

1 radian = how much degree (conversion)

360 degree or 1 revolution 

180 degree

90 degree

Angular Displacement Formula 

Angular Velocity

Rate of change of radian or angle

rad/s or rev/minute

Angular Velocity Formula and SI Unit 

CCW Rotation Positive

CW Rotation Negative

Positive angular velocity

Rotates in direction of INCREASING theta/angle

Negative angular velocity

Rotates in direction of DECREASING theta/angle

angular Velocity Conversion rev to rad

Angular Acceleration

Change in the angular velocity of a rigid body in time

rad/s²

Angular Acceleration Formula and SI UNIT

speeding up

a is same direction as w:

slowing down

a is opposite direction as w:

Rotation with Constant Angular Acceleration ALL FORMULAS

Relationship between linear and angular speed

Tangential acceleration, atan formula 

Radial acceleration, arad formula

Magnitude of linear acceleration formula