HW#2 U5.Ch19.L2

What is the objective related to forces mentioned in the learning material?

• To memorize the laws of motion

• To understand and explain what forces are and how they affect objects

• To calculate the speed of moving objects

• To list different types of energy

What essential question is posed about forces in the learning material?

• How do forces create energy?

• How do forces shape our everyday interactions with the world around us?

• How do forces determine the speed of light?

• How do forces relate to chemical reactions?

What is a force?

• A type of energy

• A push or a pull on an object

• A form of matter

• A chemical reaction

Which of the following is an example of a force?

• Reading a book

• Pushing a shopping cart

• Watching TV

• Listening to music

How can forces affect an object?

• By changing its color

• By changing its temperature

• By changing its motion or direction

• By changing its size

What does the length of an arrow represent in a force diagram?

• The color of the force

• The strength of the force

• The type of force

• The speed of the force

In a force diagram, what does the direction of the arrow indicate?

• The color of the object

• The weight of the object

• Which way the force acts

• The temperature of the object

What unit is used to measure force?

• Joules

• Meters

• Newtons

• Watts

What is a contact force?

• A force that acts at a distance

• A push or pull applied by one object touching another

• A force that does not involve physical contact

• A force that only occurs in liquids

Which of the following is an example of a contact force?

• Gravity pulling a book down

• Kicking a soccer ball

• A magnet attracting a nail

• The wind blowing leaves