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  3. as a hot air balloon rises in the air what...

Question: as a hot air balloon rises in the air what...

Question details

As a hot air balloon rises in the air, what happens to the buoyant force acting on the balloon?

Select one:

The buoyant force decreases.

The buoyant force initially increases then decreases.

The buoyant force increases.

The buoyant force remains constant.

 

 

A truck with an open top container half full of water is accelerating up an inclined plane. The free surface of the water will _____________________.
Hint: draw a basic sketch to help you visualise the water in the container.

Select one:

none of the other answers

be horizontal

make an angle in the direction of the inclined plane

make an angle in the opposite direction to that of the inclined plane

 

 

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