Newton's Laws of Motion

Why does a feather fall slower than a book?

• The air resistance slows the feather down, causing it to fall more slowly.

• The feather is lighter than the book, so it falls faster.

• The feather has a larger surface area, which increases its weight.

• The book is made of denser material, making it fall slower.

What is inertia?

• The force that causes an object to move in a straight line.

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

• The speed at which an object travels in a vacuum.

• The gravitational pull that affects an object's weight.

What is an unbalanced force?

• A force that does not change an object's motion.

• A force that causes an object to change its motion.

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

• A force that acts on an object at rest.

What is Newton's First Law of Motion?

• An object at rest remains at rest and an object in motion remains in motion at a constant speed and in a straight line unless acted on by an unbalanced force.

• An object will accelerate in the direction of the net force acting on it.

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

• An object in motion will eventually come to a stop due to friction.

What is the formula for Newton's Second Law of Motion?

• F = m + a

• F = m × a

• F = m / a

• F = a - m

Can you give an example of Newton's Third Law of Motion?

• When you jump off a small boat, the boat moves backward as you move forward.

• A ball thrown in the air will come back down due to gravity.

• A car accelerates faster than a bicycle when both are pushed with the same force.

• An object at rest will stay at rest unless acted upon by an external force.

What is the Third Law of Motion?

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

• Objects in motion stay in motion unless acted upon by an external force.

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

• Energy cannot be created or destroyed, only transformed.

How does mass affect acceleration according to Newton's Second Law?

• The greater the mass of an object, the more force is needed to accelerate it.

• Mass has no effect on acceleration.

• Lighter objects accelerate faster than heavier objects regardless of force.

• Acceleration is independent of mass and depends only on the speed of the object.

What is an example of Newton's Second Law of Motion?

• Pushing a shopping cart: the harder you push (more force), the faster it goes (more acceleration).

• Dropping a ball: it falls to the ground due to gravity.

• A car moving at a constant speed on a straight road.

• A person jumping off a diving board.

What is air resistance?

• A force that propels an object forward through the air.

• A force that opposes the motion of an object through the air.

• A type of friction that occurs on solid surfaces.

• A gravitational force acting on objects in the atmosphere.