Newton's Second Law

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass × acceleration).

The unit of force is the Newton (N).

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

The formula to calculate force is F = ma, where F is force, m is mass, and a is acceleration.

The force applied is 20 N (calculated using F = ma: F = 10 kg × 2 m/s²).

Mass is a measure of the amount of matter in an object, typically measured in kilograms (kg).

According to Newton's Second Law, as mass increases, acceleration decreases for a given force. This means that heavier objects require more force to accelerate at the same rate as lighter objects.

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

An example of acceleration is skiing faster when going down a hill.

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass. Weight can be calculated using the formula: Weight = mass × gravity.