Honors Physics Additional Review 2024 | Forces/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 is the unit of force in the SI system?

Back

Newton (N).

Front

Explain the concept of friction.

Back

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

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic friction acts on objects that are sliding over each other.

Front

What does a free body diagram represent?

Back

A free body diagram is a graphical representation that shows all the forces acting on an object.

Front

What is the normal force?

Back

The normal force is the force exerted by a surface perpendicular to the object resting on it.

Front

How do you calculate the weight of an object?

Back

Weight (Fg) = mass (m) × gravitational acceleration (g), where g is approximately 9.81 m/s².

Front

What is the significance of the angle in inclined planes?

Back

The angle of an inclined plane affects the components of gravitational force acting parallel and perpendicular to the surface.