Newton’s Laws

What is net force?

• The total weight of an object.

• The overall force acting on an object when all the individual forces are combined.

• The force exerted by gravity on an object.

• The force that opposes motion.

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

• The force acting on an object is equal to the mass of the object multiplied by its velocity (F = mv).

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

How do you calculate weight?

• Weight = mass + gravity (W = m + g)

• Weight = mass × gravity (W = mg)

• Weight = mass ÷ gravity (W = m / g)

• Weight = mass - gravity (W = m - g)

What are unbalanced forces?

• Forces that are equal and opposite, resulting in no change in motion.

• Forces that are not equal and opposite, resulting in a change in motion.

• Forces that act in the same direction, increasing the speed of an object.

• Forces that are always present in a closed system, maintaining equilibrium.

What is the formula for calculating acceleration?

• Acceleration = (final velocity + initial velocity) / time.

• Acceleration = (final velocity - initial velocity) * time.

• Acceleration = (final velocity - initial velocity) / (time^2)

• Acceleration = (final velocity - initial velocity) / time.

What are balanced forces?

• Forces that are equal in size and opposite in direction, resulting in no change in motion.

• Forces that are unequal in size and act in the same direction, causing acceleration.

• Forces that are equal in size and act in the same direction, resulting in increased motion.

• Forces that are opposite in direction but unequal in size, causing a change in motion.

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 mass of an object multiplied by its velocity.

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 force of gravity is proportional to the mass of the objects involved.

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

What is the relationship between mass and acceleration in Newton's Second Law?

• As mass increases, acceleration increases for a given net force.

• As mass increases, acceleration decreases for a given net force.

• Mass and acceleration are independent of each other.

• Mass has no effect on acceleration.

What is friction?

• A force that opposes the motion of an object, acting parallel to the surface of contact.

• A force that accelerates the motion of an object, acting perpendicular to the surface of contact.

• A type of energy that is lost during motion due to heat.

• A force that increases the speed of an object by reducing resistance.