Kinematics & Motion, Forces, Work & Energy, Momentum & Collisions

These flashcards cover the key terms and concepts from the lecture on kinematics, forces, work and energy, momentum, and rotational dynamics.

Kinematics

The branch of physics that deals with motion without considering its causes.

Position vs Speed

Speed depends on the change in position, not the position itself.

Odometer

Measures distance traveled by a vehicle.

Speedometer

Measures the speed of a vehicle, not its velocity.

Acceleration at highest point of a ball thrown upward

Velocity = 0, acceleration ≠ 0 and directed downward.

Inertia

The tendency of an object to maintain its state of rest or uniform motion unless acted upon by a net force.

Normal Force

The support force exerted upon an object that is in contact with another stable object.

Circular Motion

Motion of an object in a circular path, where acceleration depends on radius and speed.

Kinetic Energy Factor Increase

If velocity is doubled, kinetic energy increases by a factor of 4.

Work on an Object at Rest

No work can be done on an object that remains at rest due to lack of displacement.

Negative Work

Work done against friction when moving an object at constant speed on a rough surface.

Conservation of Momentum in Collisions

In a two-body collision, when kinetic energy is conserved, momentum must also be conserved.

Rotational Dynamics

The study of the motion of objects that roll or spin.