Balance and Unbalance Force

How does friction affect the motion of an object when unbalanced forces are present?

• It always increases the motion

• It always decreases the motion

• It has no effect on motion

• It can either increase or decrease the motion depending on the situation

Are forces balanced or unbalanced when a marble rolls down a ramp?

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Are forces balanced or unbalanced when skateboarding down a ramp?

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2

Are the forces acting on the rope balanced or unbalanced?

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2

Are the forces acting on the rope balanced or unbalanced?

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2

At A the speed of the ball increases. At B, speed decreases. At C, speed is constant. Which points does the ball experience unbalanced forces?

• A and B

• B and C

• A and C

• A, B and C

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

If all four forces are balanced, the plane will

• plummet to the ground

• fly faster and faster

• fly slower and slower

• fly at a constant speed and direction

Tags

NGSS.MS-PS2-2

These forces are...

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2