Newton Laws

What happens to an object when unbalanced forces act on it?

• The object will remain at rest.

• The object will accelerate in the direction of the net force.

• The object will move at a constant speed.

• The object will change its shape.

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NGSS.MS-PS2-2

If a 20 kg bike accelerates at 10 m/s², what is the force?

• 150 N

• 200 N

• 250 N

• 300 N

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NGSS.MS-PS2-2

What is a balanced force?

• A force that causes an object to accelerate in the direction of the force.

• A force pair that has a net force of zero, meaning the forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

• A force that is always greater than the opposing force, causing movement.

• A force that acts only on stationary objects, preventing them from moving.

What is the unit of force?

• Pound (lb)

• Kilogram (kg)

• Newton (N)

• Joule (J)

How do you calculate force using mass and acceleration?

• F = m + a

• F = m - a

• F = m × a

• F = m / a

What is an unbalanced force?

• A force that does not change the motion of an object.

• A force that results in a net force greater than zero, causing an object to accelerate in the direction of the net force.

• A force that is equal in magnitude and opposite in direction to another force.

• A force that acts on an object at rest, keeping it stationary.

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NGSS.MS-PS2-2

What is Newton's Second Law of Motion?

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = m × a).

• An object in motion stays in motion unless acted upon by an external force.

• The force acting on an object is equal to the mass of the object multiplied by its velocity.

• For every action, there is an equal and opposite reaction.

Tags

NGSS.MS-PS2-2

What is inertia?

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

• The force that causes an object to accelerate.

• The speed of an object in a vacuum.

• The weight of an object in relation to gravity.

What is Newton's First Law of Motion?

• An object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

• For every action, there is an equal and opposite reaction.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• Objects in motion tend to slow down due to friction unless acted upon by a force.

What is Newton's Third Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object in motion stays in motion unless acted upon by an external force.

• The force of gravity is proportional to the mass of the objects involved.

• Energy cannot be created or destroyed, only transformed.

Tags

NGSS.MS-PS2-1