Principles of Motion and Energy

The change of position over time is called

• position
• motion
• speed
• location

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Tags

NGSS.MS-PS2-2

Which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

Tags

NGSS.MS-PS2-2

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

Any time the forces are unbalanced, an object will remain at rest. True or false?

• true
• false

Tags

NGSS.MS-PS2-2

What is the net force on the block? (click on the words to view the picture)

• 5 Newtons up
• 5 Newtons down
• 15 Newtons up
• 15 Newtons down

Which of the following statements is true? 

• Balanced forces cause a change in motion. 
• Unbalanced forces cause a change in motion. 
• Forces do not effect the change in motion. 

Tags

NGSS.MS-PS2-2

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A place or object used for comparison to determine if another object is in motion is called a

• comparison point
• reference point
• point of view
• motion detector

8 N to the left , and 4 N to the right. Find the net force. Is this balanced 

• 12 N Right  No
• 4 N Left  No
• 12 N Right  Yes
• 4 N Left  Yes

Tags

NGSS.MS-PS2-2