Newtons Second Law

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 = ma).

• 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 that object multiplied by its acceleration (F = ma).

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

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What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

• Mass and weight are the same; both refer to the quantity of matter in an object.

• Weight is the amount of matter in an object, while mass is the force exerted by gravity on that matter.

• Mass is a measure of an object's volume, while weight is a measure of its density.

If a 10 kg object accelerates at 15 m/s², what is the force applied?

• 100 Newtons

• 150 Newtons

• 200 Newtons

• 250 Newtons

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What is the unit of force in the International System of Units (SI)?

• Joule (J)

• Pascal (Pa)

• Newton (N)

• Watt (W)

What happens to acceleration if force increases while mass remains constant?

• Acceleration decreases.

• Acceleration remains constant.

• Acceleration increases.

• Acceleration becomes zero.

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What is the formula for calculating acceleration?

• a = F/m

• a = m/F

• a = F*m

• a = F+m

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What two variables define force?

• Mass and acceleration.

• Velocity and time.

• Distance and speed.

• Energy and momentum.

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What is inertia?

• The force that causes an object to move in a circular path.

• 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 exerted by an object on another object.

How does friction affect the motion of an object?

• Friction increases the speed of an object.

• Friction has no effect on the motion of an object.

• Friction opposes the motion of an object, requiring more force to achieve acceleration.

• Friction only affects objects at rest.

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What is the effect of applying a force to an object at rest?

• It will cause the object to accelerate in the direction of the force.

• It will cause the object to remain at rest indefinitely.

• It will cause the object to change its color.

• It will cause the object to vibrate without moving.

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