Newton's First Law "Law of Inertia"

Multiple Choice

Which of the following best describes a force?

• A property that only changes the color of an object

• A push or pull that gives energy to an object

• A measurement of temperature

• A type of sound wave

Open Ended

Why is it important to understand the concept of force when studying motion?

Multiple Choice

Which of the following best describes a long-range force?

• A force that acts on an object by touching it

• A force that acts on an object without touching it

• A force that only exists in liquids

• A force that cannot be named

Open Ended

Describe a real-life scenario where both contact and long-range forces act on an object, and explain how each force affects the object's motion.

Multiple Choice

What is the net force on an object if two forces, F1 and F2, act in opposite directions as shown in the diagram?

• The sum of F1 and F2

• The difference between F1 and F2, in the direction of the larger force

• The product of F1 and F2

• Zero, regardless of direction

Multiple Choice

If two horizontal forces of 225 N and 165 N act in opposite directions on a 5 kg crate, what is the net horizontal force on the crate?

• 60 N toward the 225 N force

• 390 N toward the 225 N force

• 60 N toward the 165 N force

• 0 N

Open Ended

Summarize what you have learned about the concept of force and its relation to motion. How would you explain it to someone who has never studied physics before?

Multiple Choice

A force is best described as:

• A property that only changes the color of an object

• A push or pull that gives energy to an object

• A measurement of temperature

• A type of sound wave

Open Ended

What is inertia?