S8P3 Review

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be caused by an increase in speed, a decrease in speed, or a change in direction.

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How does mass affect acceleration?

Back

According to Newton's second law, acceleration is inversely proportional to mass. This means that for a given force, an object with a larger mass will have a smaller acceleration.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

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What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not cause a change in motion, while unbalanced forces result in acceleration or a change in the object's motion.

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What is gravitational force?

Back

Gravitational force is the attractive force between two masses. It pulls objects toward each other, such as the Earth pulling objects toward its center.

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What is the role of thrust in a rocket launch?

Back

Thrust is the force that propels a rocket upward. It must be greater than the gravitational force acting on the rocket for it to ascend.

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What happens to an object in free fall?

Back

An object in free fall is only influenced by gravity, experiencing constant acceleration downward until it reaches terminal velocity.

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What is terminal velocity?

Back

Terminal velocity is the constant speed an object reaches when the force of gravity is balanced by the drag force of the medium through which it is falling.

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How do forces affect motion?

Back

Forces can change the speed or direction of an object's motion. The net force acting on an object determines its acceleration.

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What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net force.