Forces & Motion

Front

What is a Newton equal to?

Back

1 Newton (N) is equal to 1 kg*m/s².

Front

What is the combination of all the forces acting on an object called?

Back

The combination of all the forces acting on an object is called the net force.

Front

In a Free Body Diagram (FBD), which diagram shows an elevator accelerating upward?

Back

Diagram B shows an elevator accelerating upward.

Front

How do you convert weight from pounds to Newtons?

Back

To convert weight from pounds to Newtons, multiply by 4.448. For example, 155 lb is approximately 690 N.

Front

What happens to the gravitational force between two objects if the distance between them is doubled?

Back

If the distance between two objects is doubled, the gravitational force between them is reduced to one-fourth of its original value.

Front

What is the formula for calculating net force?

Back

Net force (F_net) is calculated as F_net = F_applied - F_friction.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in Newtons (N).

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.81 m/s².

Front

What is friction?

Back

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