Newton's Laws Review

What is mass?

• A measure of the weight of an object

• A measure of the amount of matter in an object, which also indicates its inertia.

• A measure of the volume of an object

• A measure of the density of an object

What is Newton's first law of motion?

• An object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external 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 effect of friction on motion?

• Friction increases the speed of moving objects.

• Friction has no effect on motion.

• Friction is a force that opposes the relative motion of two surfaces in contact, affecting the acceleration and velocity of moving objects.

• Friction only affects stationary objects.

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

• Pound (lb)

• Newton (N)

• Joule (J)

• Pascal (Pa)

What is centripetal acceleration?

• Centripetal acceleration is the acceleration of an object moving in a circular path, directed toward the center of the circle.

• Centripetal acceleration is the acceleration of an object moving in a straight line.

• Centripetal acceleration is the force that keeps an object in a circular path.

• Centripetal acceleration is the change in velocity of an object moving in a circular path.

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

• Energy cannot be created or destroyed, only transformed.

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 straight line.

• The energy an object possesses due to its motion.

What is the relationship between force and acceleration?

• Increasing force results in increased acceleration (F=ma).

• Acceleration is independent of force applied.

• Force and acceleration are inversely related.

• Acceleration decreases as force increases.

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 (Weight = mass × gravitational acceleration).

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

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

• Weight is always greater than mass regardless of the object's location.

What is Newton's second law of motion?

• Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

• Newton's second law states that for every action, there is an equal and opposite reaction.

• Newton's second law states that an object at rest will remain at rest unless acted upon by a net external force.

• Newton's second law states that the velocity of an object is constant unless acted upon by a net force.