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3 years ago

The diagram shows how air moves near the coast on a warm day. Explain why air moves as shown on the diagram. 5 marks

Physics

1 answer:

BartSMP [9]3 years ago

3 0

Answer:

See the answer below

Explanation:

Because water has higher specific heat capacity than water, land usually gets heated and loses heat faster than water.

During a warm day, the air above land gets heated quickly more than the air above water. This warm, less dense air above land begins to rise, creating a low pressure in the process. This paves way for the denser, cold air above water to replace the vacuum created by the warm air above land.

<em>The directional movement of air from water to land is what is known as the sea breeze in coastal areas.</em>

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3 years ago

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3 years ago

A rock falls from rest off a cliff and hits the ground in 2 seconds. If there is no air resistance, determine the rock's velocit

mihalych1998 [28]

Answer:

19.6m/s

Explanation:

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that would be the velocity of rock as it would hit the ground.

Note! We have assumed that there is no air resistance.

A rock falling off a cliff can be modeled as an object starting with zero velocity moves with constant acceleration for a certain period of time, for such motion following equation of motion can be used.

here in our case because object starts off from rest and is acceleration because of gravity ( Motion under gravity).

and of course t = 2 seconds.

Now by substituting all this information in equation of motion we get.

V = 19.6m/s

that would be the velocity of rock as it would hit the ground.

Note! We have assumed that there is no air resistance.

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3 years ago