Forces and Newton's Laws

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net external force.

Front

Define net force.

Back

The vector sum of all the forces acting on an object.

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a) or F = ma.

Front

What does it mean for an object to be in equilibrium?

Back

The net force acting on the object is zero, resulting in no acceleration.

Front

What is friction?

Back

A force that opposes the relative motion of two surfaces in contact.

Front

How does mass affect acceleration according to Newton's Second Law?

Back

For a given force, an increase in mass results in a decrease in acceleration.

Front

What is the relationship between weight and mass?

Back

Weight (W) is the force of gravity acting on an object, calculated as W = m × g, where g is the acceleration due to gravity.

Front

What is the significance of the angle in tension forces?

Back

The angle affects the components of the tension force, influencing how much force is directed vertically and horizontally.

Front

What is the acceleration of an object in free fall?

Back

The acceleration of an object in free fall near the Earth's surface is approximately 9.81 m/s².

Front

What does it mean for an object to accelerate?

Back

An object accelerates if it changes its velocity, which can occur through a change in speed or direction.