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W_ace
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Homework Statement
A large man inhales a quantity of helium in order to fly east. If he is capable of flying at 26 km'hr by waving his arms and there is a wind of 10 km/h [S20E], find his heading and ground speed
Average acceleration is the change in velocity over a specific time period. It is calculated by dividing the change in velocity by the time it took to change.
To calculate average acceleration, you need to know the initial velocity, final velocity, and the time it took to change between the two velocities. The formula for average acceleration is (final velocity - initial velocity) / time.
Helium is a gas that is less dense than the surrounding air. When an object is filled with helium, it becomes lighter and experiences less air resistance. This results in a higher average acceleration when flying east compared to flying without helium.
Flying east with helium is used as an example because it involves a change in velocity (due to the wind) and the use of a gas that affects the object's weight and air resistance. This allows for a more complex calculation of average acceleration.
Yes, average acceleration can be negative. This occurs when an object is slowing down or changing direction. The negative sign indicates that the object's velocity is decreasing over time.