Topic 1 Linear Motion and Forces

Linear Motion

Motion in a straight line that can be described using measurable scalar and vector quantities such as displacement, distance, speed, and velocity.

Constant Acceleration

A uniform change in velocity over time, often analyzed using equations of motion.

Instantaneous Velocity

The velocity of an object at a specific moment in time.

Equations of Motion

Mathematical formulas that describe the relationships between displacement, velocity, acceleration, and time for objects in motion.

Net Force

The overall force acting on an object, which determines its acceleration.

Newton’s First Law of Motion

An object will remain at rest or continue in motion unless acted upon by an unbalanced force.

Inertia

The tendency of an object to resist changes in its state of motion.

Newton’s Second Law of Motion

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).

Mass vs. Weight

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Newton’s Third Law of Motion

For every action, there is an equal and opposite reaction; forces come in pairs that act on two different objects.

Free-Falling Objects

Objects that are only influenced by gravity, typically ignoring air resistance.

Acceleration due to Gravity

The rate of acceleration of an object due to Earth's gravitational pull, approximately 9.80 m/s².

Uniform Motion

Motion at a constant speed in a straight line.

Air Resistance

The forces that oppose the motion of objects through the air, affecting their velocity and acceleration.

Graphical Representation in Motion

Using graphs to represent and analyze the position, velocity, and acceleration of moving objects.