Forces and Motion Understanding Check

What does Newton's first law of motion state?

• An object at rest will stay at rest, and an object in motion will stay in motion with the same direction and speed unless acted upon by an unbalanced force

• An object at rest will stay at rest, and an object in motion will stay in motion with a different direction and speed unless acted upon by a balanced force

• An object at rest will start moving, and an object in motion will stop unless acted upon by a balanced force

• An object at rest will start moving, and an object in motion will stop unless acted upon by an unbalanced force

What are balanced forces?

• Forces that have no effect on an object's motion

• Forces that cancel each other out, resulting in a net force of zero

• Forces that add up to create a net force of zero

• Forces that always cause motion in the same direction

How is net force calculated when two forces act in opposite directions on an object?

• By dividing the forces

• By multiplying the forces

• By subtracting the forces

• By adding the forces

Tags

NGSS.MS-PS2-2

What is the force that opposes motion between surfaces?

• Friction

• Gravity

• Reactionary force

• Inertia

When does an object experience a change in motion?

• When the net force is zero

• When the net force is not zero

• When there is no force acting on it

• When it is at rest

Tags

NGSS.MS-PS2-2

What happens when two or more forces in the same direction act on an object?

• The object will stop moving

• The speed of the motion will increase in the direction of the net force

• The speed of the motion will decrease in the direction of the net force

• The object will move in the opposite direction

Tags

NGSS.MS-PS2-2

What is the formula to calculate speed?

• S = D + T

• S = D / T

• S = D x T

• S = D - T

Tags

NGSS.MS-PS3-1

When an unbalanced force is applied to an object at rest, what will happen?

• The object will start moving in the opposite direction

• The object will stop moving

• The object will remain at rest

• The object will start moving in the direction of the stronger force

Tags

NGSS.MS-PS2-2

What is the effect of friction on the motion of an object?

• Friction acts in the opposite direction to the motion of the object

• Friction causes the object to move in the same direction

• Friction has no effect on the object's motion

• Friction causes the object to move faster

What does a balanced force do to the state of motion of an object?

• It maintains the object's state of motion

• It has no effect on the state of motion

• It causes the object to move in the opposite direction

• It stops the object from moving

Tags

NGSS.MS-PS2-2