Terminal Speed

Falling objects do not continue to accelerate at 9.8 \(m/s^2\)

1 pts

volume_mute

True

False

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Explanation

The acceleration of the object does not depend upon the net force acting on the object

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True

False

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Explanation

Calculate the net force

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volume_mute

If you knew the numerical values needed, how would you calculate the net force exerted on the ball shown in the figure?

Subtract the air resistance from the object's weight

Subtract the object's weight from the air resistance

The net force is 9.8 m/s²

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Explanation

As downward speed of falling objects increase, so does air resistance

1 pts

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True

False

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Explanation

A falling object downward speed increases

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A falling object downward speed increases, so does air resistance. Thus, there comes a time when air resistance equals the weight of the object.

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Explaining Terminal Speed

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As the downward speed of a falling object (1), so does air resistance. Thus, there comes a time when air resistance (2) the weight of the object. At this speed the object no longer (3), but instead it continues at the same (4). (This follows from F = ma, since if the net force is (5), the acceleration must also be (6).) The final speed attained is called the object's (7).

Please drag and drop the selected option in the right place or type it instead

exceeds

increases

equals

acceleration

greater zero

terminal speed

less than zero

final speed

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Falling Rock

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volume_mute

Consider a falling rock at a time when it is traveling at just less than terminal speed. Will its acceleration be less than, equal to, or more than 9.8 m/s² at this time?

less than 9.8 m/s²

equals to 9.8 m/s²

more than 9.8 m/s²

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Falling objects do not continue to accelerate at 9.8 \(m/s^2\)

Correct Answer

Explanation

The acceleration of the object does not depend upon the net force acting on the object

Correct Answer

Explanation

Calculate the net force

Correct Answer

Explanation

As downward speed of falling objects increase, so does air resistance

Correct Answer

Explanation

A falling object downward speed increases

Correct Answer

Explanation

Explaining Terminal Speed

Correct Answer

Explanation

Falling Rock

Correct Answer

Explanation

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