Force and Motion Study Guide

What is the difference between balanced and unbalanced forces?

• Balanced forces result in no change in motion. Unbalanced forces result in a change in motion.

• Balanced forces result in a change in motion. Unbalanced forces result in no change in motion.

• Balanced forces have unequal magnitude and opposite direction, resulting in a change in motion. Unbalanced forces have equal magnitude and same direction, resulting in no change in motion.

• Balanced forces have equal magnitude and same direction, resulting in no change in motion. Unbalanced forces have equal magnitude and opposite direction, resulting in a change in motion.

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State Newton's first law of motion.

• An object at rest will start moving on its own

• An object in motion will eventually come to a stop

• An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• An object in motion will change direction without any force

Explain the concept of inertia.

• Inertia is the tendency of an object to change color when in motion.

• Inertia is the tendency of an object to attract other objects.

• Inertia is the tendency of an object to resist changes in its state of motion.

• Inertia is the tendency of an object to speed up when a force is applied.

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What are the three types of friction?

• Fast friction, slow friction, and medium friction

• Horizontal friction, vertical friction, and diagonal friction

• Smooth friction, rough friction, and bumpy friction

• Static friction, kinetic friction, and rolling friction

How does friction affect motion?

• Friction causes objects to move in a straight line

• Friction has no effect on motion

• Friction increases the speed of an object

• Friction opposes the motion of an object

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What is the formula to calculate weight?

• Weight = Mass x Acceleration due to gravity

• Weight = Mass + Acceleration due to gravity

• Weight = Mass / Acceleration due to gravity

• Weight = Mass - Acceleration due to gravity

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force due to gravity.

• Mass is measured in pounds, while weight is measured in kilograms.

• Mass and weight are the same thing.

• Mass is the force due to gravity, while weight is the amount of matter in an object.

Explain Newton's second law of motion.

• It relates force and velocity.

• Force is inversely proportional to mass.

• Force equals mass times acceleration.

• Force equals mass divided by acceleration.

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How does gravity affect objects on Earth?

• It pushes objects away from the Earth

• It causes objects to float in the air

• It pulls objects towards the center of the Earth.

• It has no effect on objects

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State Newton's third law of motion.

• The force of gravity is stronger on heavier objects

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

• An object at rest will stay at rest unless acted upon by an external force

• The force of an object is directly proportional to its acceleration

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