Forces and Net Force 5/6/24

Front

What is the universal law of gravitation?

Back

Every point mass attracts every other point mass by a force pointing along the line intersecting both points. The force is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them.

Front

What is gravitational force?

Back

The attractive force that acts between any two masses in the universe.

Front

What factors affect the strength of gravitational force between two objects?

Back

The strength of gravity depends on the masses of the objects and the distance between them.

Front

Define net force.

Back

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

Front

What is an applied force?

Back

A force that is applied to an object by a person or another object.

Front

What is the difference between contact forces and non-contact forces?

Back

Contact forces require physical contact between objects, while non-contact forces act at a distance (e.g., gravitational force).

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N).

Front

How do you calculate net force when multiple forces are acting on an object?

Back

Add the magnitudes of the forces acting in the same direction and subtract the magnitudes of the forces acting in the opposite direction.

Front

What is inertia?

Back

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

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass. It is calculated as weight = mass × gravitational acceleration.