Understanding Forces and Their Effects

What does Newton's first law of motion state about an object at rest?

• It will start moving on its own.

• It will remain at rest unless acted upon by an external force.

• It will change direction spontaneously.

• It will accelerate without any force.

According to Hooke's law, what happens to an object when a greater force is applied?

• It becomes lighter.

• It moves faster.

• It deforms more.

• It stops moving.

What role does friction play between two surfaces in contact?

• It prevents or slows down motion.

• It speeds up motion.

• It changes the color of surfaces.

• It increases the mass of objects.

How is acceleration related to force and mass according to Newton's second law?

• Acceleration is inversely proportional to force and mass.

• Acceleration is directly proportional to force and inversely proportional to mass.

• Acceleration is not related to force or mass.

• Acceleration is directly proportional to mass and inversely proportional to force.

What is the effect of increasing the mass of an object on its acceleration for a given force?

• The object stops moving.

• The acceleration decreases.

• The acceleration increases.

• The acceleration remains the same.