Nafes-Grade 6

Which of the following best describes Newton’s First Law of Motion?

• Forces are always balanced.

• An object will remain at rest or in uniform motion unless a force acts on it.

• Every action has an equal and opposite reaction.

• Acceleration depends on force and mass.

What force typically causes a moving object to slow down and stop?

• Gravity

• Friction

• Magnetism

• Inertia

In space, if you throw an object, what will happen?

• It will slow down due to air resistance.

• It will continue moving indefinitely in the same direction and speed.

• It will immediately stop moving.

• It will fall back to Earth.

According to Newton’s Second Law, what happens if you apply more force to an object?

• The object’s mass will increase.

• The object will slow down.

• The object will accelerate more.

• The object will not move.

Which equation represents Newton’s Second Law of Motion?

• F = m/v

• F = ma

• P = m × v

• W = F × d

A 2 kg ball is pushed with a force of 10 N. What is its acceleration?

• 5 m/s²

• 20 m/s²

• 10 m/s²

• 0.2 m/s²

In real life, which situation best illustrates Newton’s Second Law?

• A heavy truck requires more force to accelerate than a small car.

• A basketball remains stationary until kicked.

• A skateboard moves backward when the rider jumps off.

• A book on a table stays at rest.

What happens to the acceleration if the same force is applied to two objects of different masses?

• Both will accelerate equally.

• The heavier object will accelerate more.

• The lighter object will accelerate more.

• Neither will accelerate.

Which of these examples demonstrates Newton’s Third Law?

• A rocket launching into space.

• A ball rolling on the ground and slowing due to friction.

• An apple falling from a tree.

• A car accelerating on a flat road.

When you jump off a small boat onto a dock, what happens to the boat?

• It remains still.

• It moves forward.

• It moves backward.

• It sinks.