Unit 3 Test Review

An attractive force on objects with mass

• Magnetism

• Applied forces

• Gravity

• Normal Forces

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The push or pull on one object by another

• Magnetism

• Applied forces

• Gravity

• Normal Forces

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force opposing an object on a surface

• Magnetism

• Applied forces

• Friction

• Normal Forces

A force that attracts or repels objects

• Magnetism

• Applied forces

• Friction

• Normal Forces

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A force that causes resistance when two objects slide across one another

• Magnetism

• Applied forces

• Friction

• Normal Forces

Kyle, Nathan, Tim, and Taka were practicing yo-yo tricks. What forces were at work as the yo-yo went up and down the string?

• • 
    

    A

    Only contact forces were at work as the yo-yo moved up and down. 

• • 
    

    B

    Magnetism caused the speed of the yo-yo to decrease as it moved upward. 

• • 
    

    C

    Friction opposed gravity and caused the yo-yo to move upward when there was a slight tug as it reached the bottom of the string. 

• • 
    

    D

    Gravity opposed friction and caused the yo-yo to move upward and back to its original position. 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Isabella is on a softball team and is up to bat. As she hits the softball, what forces will act on the ball? 

• • A

    Applied force will act on the softball as she hits it, and gravity will bring the ball down to the ground. 

• • 
    
    

    B

    Magnetism and friction are forces that will act on the softball to slow it down. 

• • 
    

    C

    Normal force and friction are the contact forces that will act on the ball to increase its speed. 

• • 
    

    D

    Applied force and magnetism are the noncontact forces that will keep the softball in the air.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An up and down motion

• Vertical

• Horizontal

• Force

• Net force

Tags

NGSS.MS-PS2-4

The sum of all forces acting on an object

• Vertical

• Horizontal

• Force

• Net force

Tags

NGSS.MS-PS2-2

A straight path that an object can move along

• Vertical

• Force

• Direction

• Net force