Balance and Unbalance Force

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

• Balanced
• Unbalanced

Tags

NGSS.3-PS2-1

A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?

• The cart will speed up.
• The cart will slow down.
• The cart will move at a constant speed in a straight line.
• The cart will fly to never never land!

Tags

NGSS.MS-PS2-2

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

• Balanced
• Unbalanced

Are forces balanced or unbalanced when skateboarding down a ramp?

• Balanced
• Unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 3 m/s?

• The boat will speed up.
• The boat will slow down. 
• The boat will move backwards.
• The boat will continue sailing to the left at a constant speed of 4 m/s.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 5 m/s?

• The boat increase speed and continue moving left.
• The boat will sink. 
• The boat will move backwards.
• The boat will continue sailing to the left at a constant speed of 4 m/s.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Are the forces acting on the rope balanced or unbalanced?

• Balanced
• Unbalanced

Tags

NGSS.HS-PS2-1

Are the forces acting on the rope balanced or unbalanced?

• Balanced
• Unbalanced

Tags

NGSS.MS-PS2-1

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

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2