Force and Motion Review 8th grade

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. For example, a kid at the top of a sledding hill has potential energy because of his height.

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What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. For example, a quarterback throwing a football has kinetic energy.

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What happens when you apply a force to an object?

Back

When you apply a force to an object, it can cause the object to move, change direction, or change shape, depending on the amount of force and the object's mass.

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What is an unbalanced force?

Back

An unbalanced force occurs when the total forces acting on an object are not equal, causing the object to accelerate in the direction of the larger force.

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What is Newton's Third Law of Motion?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction. For example, when you push against a wall, the wall pushes back with equal force.

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How do you determine the direction of an object's motion?

Back

The direction of an object's motion can be determined by observing the object's movement relative to a reference point.

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What is the relationship between mass and force?

Back

The relationship between mass and force is described by Newton's Second Law, which states that force equals mass times acceleration (F = ma).

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What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact with each other.

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What is the formula for calculating kinetic energy?

Back

The formula for calculating kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

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What is the formula for calculating potential energy?

Back

The formula for calculating potential energy (PE) is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.