What is the result when forces acting on an object are balanced?

• The object spontaneously moves.

• The object accelerates.

• The object changes direction.

• There is no change in the object's motion.

Tags

NGSS.MS-PS2-2

What is the state called when the weight of the bird and the reaction force from the branch are equal?

• Motion

• Acceleration

• Equilibrium

• Velocity

What happens to the birds when another bird lands on the branch?

• The branch breaks.

• They start singing.

• They fly away.

• The branch supports them.

Tags

NGSS.4-LS1-1

What keeps the bike moving at a constant speed?

• Balanced forces

• Only gravitational force

• Only frictional force

• Unbalanced forces

Tags

NGSS.MS-PS2-2

What causes the bike to decelerate and eventually stop?

• Decreased resistive forces

• Unbalanced forces due to a broken chain

• Balanced forces

• Increased driving force

Tags

NGSS.MS-PS2-2

What defines balanced forces?

• Forces that cause motion

• Forces of the same size acting in opposite directions

• Randomly acting forces

• Forces of different sizes acting in the same direction

What is the effect of unbalanced forces on an object?

• Circular motion

• No change in motion

• Constant speed

• Change in motion

Tags

NGSS.MS-PS2-2

What happens when forces are unbalanced?

• The object moves at a constant speed.

• The object remains at rest.

• The object's motion changes.

• The object disappears.

Tags

NGSS.MS-PS2-2