What causes an object to move according to the video?

• Balanced forces

• Unbalanced forces

• No forces

• Equal forces from all directions

Tags

NGSS.MS-PS2-2

What happens when balanced forces act on an object?

• It moves randomly

• It remains stationary

• It rotates

• It moves in the direction of the stronger force

What results from two people pulling an object in opposite directions with equal force?

• The object disintegrates

• The object remains stationary

• The object spins

• The object moves in a random direction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In the tug of war example, when does the rope move?

• When equal forces are applied on both sides

• When the rope is cut

• When no force is applied

• When unbalanced forces are applied

Tags

NGSS.MS-PS2-2

What must happen for a ball at rest to start moving?

• Balanced forces must act on it

• It must be observed

• An unbalanced force must act on it

• It must be on a slope

Tags

NGSS.MS-PS2-2

What happens to the ball when the force of the kick becomes equal to other forces acting on it?

• It changes direction

• It stops

• It vanishes

• It accelerates

Tags

NGSS.MS-PS2-2

What happens when a heavier person sits on one side of the seesaw?

• The seesaw lifts off the ground

• The seesaw remains balanced

• Nothing happens

• The seesaw moves towards the ground on that side

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What describes a seesaw that stays level?

• It is being pushed down on both sides equally

• Unbalanced forces are acting on it

• It is broken

• Balanced forces are acting on it

Tags

NGSS.3-PS2-1

What is the effect of unbalanced forces acting in the same direction?

• They have no effect

• They make the object lighter

• They cause the object to move

• They cancel each other out

Tags

NGSS.MS-PS2-2

What is true about balanced forces?

• They always cause movement

• They are equal in size and act in opposite directions

• They are always unnoticeable

• They act in the same direction