Introduction Forces and Motion

A push or pull is a __________________.

• force

• motion

• inertia

• balance

Tags

NGSS.3-PS2-1

When multiple forces are at work on an object, the ________________ force is called a _______________ ____________________.

• resultant; net force

• balanced; equilibrium force

• opposing; frictional force

• gravitational; weight force

Tags

NGSS.MS-PS2-2

If the net forces ________________ each other out, we say that they are ____________________ ______________________.

• add; unbalanced forces

• cancel; balanced forces

• multiply; resultant forces

• divide; opposing forces

Describe what happens in tug of war if the net forces are balanced. Why?

• The rope moves to one side because one team is stronger.

• The rope stays in the same position because the forces are equal.

• The rope breaks due to excessive force.

• The rope moves back and forth without stopping.

Tags

NGSS.MS-PS2-2

What is inertia? What is it related to?

• Inertia is the tendency of an object to resist changes in its state of motion; it is related to mass.

• Inertia is the force that moves objects; it is related to speed.

• Inertia is the energy stored in an object; it is related to height.

• Inertia is the ability to do work; it is related to power.

Tags

NGSS.MS-PS2-2

What is Sir Isaac Newton known for?

• Discovering the laws of thermodynamics

• Developing the theory of relativity

• Formulating the laws of motion and universal gravitation

• Inventing the steam engine

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-4

Newton’s 1st Law of Motion: An object at ____________ tends to stay at ____________ unless acted upon by an outside _______________.

• rest; rest; force

• motion; motion; energy

• rest; motion; force

• motion; rest; energy

Newton’s 1st Law is also known as the Law of ___________________.

• Gravity

• Inertia

• Acceleration

• Friction