Newton's Laws and Force Concepts

Front

What is Newton's Second Law of Motion?

Back

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 as F = ma.

Front

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

Back

Newton (N)

Front

What does the term 'net force' refer to?

Back

The combination of all the forces acting on an object.

Front

Define gravity in the context of physics.

Back

Gravity is a force that attracts two bodies towards each other, proportional to their masses.

Front

How many Laws of Motion did Isaac Newton formulate?

Back

Three Laws of Motion.

Front

What is the formula to calculate force?

Back

F = ma (Force equals mass times acceleration).

Front

What is inertia?

Back

Inertia is 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 exerted by gravity on an object, calculated as weight = mass x gravitational acceleration (W = mg).

Front

What is the difference between action and reaction forces?

Back

Action and reaction forces are equal in magnitude and opposite in direction, as stated in Newton's Third Law of Motion.

Front

What is the formula for calculating gravitational force between two objects?

Back

F = G(m1*m2)/r^2, where G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.