Force and Motion

Balanced Forces

• Are equal, but in opposite directions

• Do not change motion

• Can keep things still

• All of these are true

If you increase the force pushing on an object, its speed will

• increase

• decrease

• not change

• stay balanced

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Unbalanced forces

• Will change motion

• Will not change motion

• Will keep things still

• Are equal on all sides

Tags

NGSS.MS-PS2-2

According to Newton's First Law, an object at rest will _______ unless a force acts on it.

• remain in motion

• will remain at rest

• never change

• will move on its own

According to Newton's First Law, an object in motion will ______ unless a force acts on it.

• remain in motion

• will remain at rest

• never change

• will move on its own

According to Newton's First Law, objects will only change their motion if...

• they stay in motion forever

• friction stops them

• a balanced force acts on them

• an unbalanced force acts on them

Tags

NGSS.MS-PS2-2

How would you describe the net force?

• Balanced, net force is 0 N

• Unbalanced, net force is 50 N to the left

• Unbalanced, net force is 950 N

• Unbalanced, net force is 50 N to the right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Tags

NGSS.MS-PS2-2

Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

• Balanced- there is no change in motion

• Unbalanced- motion is changing

• Unbalanced- it is speeding up

• Balanced- the car is stopped

Tags

NGSS.MS-PS2-2

If an object is not moving the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• strong

Tags

NGSS.MS-PS2-2