Forces Review

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

• Balanced
• Unbalanced

Tags

NGSS.MS-PS2-2

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 skateboarding down a ramp?

• Balanced
• Unbalanced

Tags

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-PS2-2

The tendency of an object to resist changes in its motion is...

• inertia

• force

• acceleration

• momentum

Any push or pull on an object.

• force
• velocity 
• inertia
• momentum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The force that opposes motion between two surfaces in contact with each other.

• inertia
• friction
• momentum
• gravity

The force of attraction between all matter.

• inertia
• friction
• net force
• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A Newton is a unit of...

• force

• inertia

• acceleration

• momentum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When all the forces on an object are equal and opposite, & the net force is zero, that's...

• balanced forces
• unbalanced forces
• terminal velocity
• reaction forces