Chapter 3: Lesson 1-Describing Motion and Force

What is a contact force?

• Forces that are applied when objects touch one another

• Force that are applied when no forces touch one another

• Forces that are applied when it touches the object or not

• Forces that are applied when three objects touch one another

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

• Newton(s)

• Net Weight

• Net Force

• Mass

Tags

NGSS.MS-PS2-2

A push or a pull is called...

• gravity

• force

• friction

• mass

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

The strength of a force is called a...

• Newton

• Jule

• Gram

• Force

How do you know that an object is in motion?

• Objects

• Reference Motion

• Movement

• Reference Point

What is an unbalanced force?

• The combination of all forces

• A nonzero force not acting on the object

• A nonzero force acting on the object

• No motion occurring

Tags

NGSS.MS-PS2-2

What is friction?

• A push or a pull on an object

• A contact force with two forces exerting on each other

• A non-contact force applied to the object whether it touches it or not

• A non-contact force with two forces exerting on each other

What are some examples of force?

(more than one answer is correct)

• A cat pushing on a dog

• A horse pulling a carriage

• A person standing up

• Lifting up a dinner plate

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

What is the equation for work?

• (force x mass)

  = work

• (gravity x distance)

  = work

• (force x distance)

  = work

• (speed x mass)

  = work

Motion is relative when determined by a...

• net force

• reference force

• newton

• reference point