Physics: Motion, Forces, and Energy

These flashcards cover key concepts related to motion, forces, energy, and relevant equations as discussed in the lecture.

Defined as the distance moved per unit time; calculated using the formula speed = distance/time.

Speed

The change in velocity (or speed) per unit time, expressed by the formula a = \Delta v/t.

Acceleration

Graphs that depict the distance an object travels over time, where the slope indicates speed.

Distance-Time Graphs

Graphs that represent an object's velocity over time, where the slope indicates acceleration and the area under the graph indicates distance traveled.

Velocity-Time Graphs

The distance a vehicle travels while the driver is reacting to a situation before applying brakes.

Thinking Distance

The distance a vehicle travels while the brakes are applied and the vehicle is slowing down.

Braking Distance

A body will remain at rest or continue to move at a constant velocity unless acted upon by a resultant force.

Newton's 1st Law

The relationship between force, mass, and acceleration expressed as F = m \times a.

Newton's 2nd Law

For every action, there is an equal and opposite reaction.

Newton's 3rd Law

The amount of energy transferred by a force acting over a distance, calculated as Work = Force \times Distance.

Work Done

The process where energy moves from one form to another, such as from potential energy to kinetic energy.

Energy Transfer

The maximum speed an object reaches when the force of gravity is balanced by air resistance.

Terminal Velocity

A diagram showing all the forces acting on an object, used to analyze the resultant force.

Free Body Diagram

The energy stored in an object due to its position in a gravitational field, which decreases as the object falls.

Gravitational Potential Energy (PE)

The energy of an object due to its motion, which increases as the object's speed increases.

Kinetic Energy (KE)

The resistance force that occurs when two surfaces slide against each other, often converting kinetic energy into heat.

Friction