Gravity and Kinetic Energy

Front

Speed Noun

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[speed]

Back

Speed

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The distance an object travels per unit of time, indicating the rate at which it is moving.

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Example: A car moving along a track shows how speed is calculated as distance divided by time.

Front

Acceleration Noun

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[ak-sel-uh-rey-shuhn]

Back

Acceleration

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The rate at which an object's velocity changes, which can involve speeding up, slowing down, or changing direction.

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Example: A spring compresses and releases, accelerating a ball to demonstrate changing velocity.

Front

Force Noun

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[fawrs]

Back

Force

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An interaction, such as a push or a pull, that can cause an object with mass to change its motion.

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Example: A ball on a slope shows how gravity pulls it down, illustrating force.

Front

Gravity Noun

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[grav-i-tee]

Back

Gravity

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A natural force of attraction that exists between any two objects that have mass, pulling them toward each other.

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Example: An apple falling from a tree shows gravity pulling it toward the ground.

Front

Mass Noun

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[mas]

Back

Mass

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A measure of the amount of matter contained within a physical object, which remains constant regardless of its location.

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Example: A balance scale with a feather and a rock shows how mass affects weight.

Front

Weight Noun

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[weyt]

Back

Weight

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The measure of the gravitational force acting on an object, which can vary depending on its location in space.

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Example: The image shows an apple falling from a tree, illustrating gravitational force acting on it.

Front

Kinetic Energy Noun

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[ki-net-ik en-er-jee]

Back

Kinetic Energy

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The form of energy that an object possesses because of its motion; all moving objects have kinetic energy.

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Example: A cyclist moving downhill gains kinetic energy due to motion, illustrating energy in motion.

Front

Potential Energy Noun

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[puh-ten-shuhl en-er-jee]

Back

Potential Energy

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The stored energy an object has due to its position or condition, ready to be converted into another form.

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Example: A boulder at the top of a hill has potential energy because of its position.

Front

Friction Noun

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[frik-shuhn]

Back

Friction

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A force that resists the relative motion between two surfaces that are in contact with each other.

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Example: A box on a surface shows friction as a force resisting motion, with arrows indicating direction.

Front

Free Fall Noun

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[free fawl]

Back

Free Fall

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The downward movement of an object under the sole influence of gravity, with no other forces like air resistance.

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Example: An apple falling from a tree shows free fall, moving downward due to gravity alone.