Newton's Laws and Free Body Diagrams

Front

According to Newton's third law of motion, for every action, there is an equal and opposite ________.

Back

reaction

Front

What is the net force acting on an object in equilibrium?

Back

zero

Front

Name the force that acts perpendicular to the surface an object is resting on.

Back

normal force

Front

Name the force that acts upward against the weight of an object submerged in a fluid.

Back

buoyant force

Front

What is the symbol for mass?

Back

m

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = mg)

Front

What does a free body diagram represent?

Back

A free body diagram represents all the forces acting on an object.

Front

What is the force of friction?

Back

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

Front

What is the gravitational force?

Back

The attractive force between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on an object at rest, while kinetic friction acts on an object in motion.