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11111nata11111 [884]
3 years ago
11

Discuss velocity by providing at least one example and explain why velocity is either a scalar or vector quantity.

Physics
2 answers:
grandymaker [24]3 years ago
5 0
Velocity is speed plus direction, so an example of velocity would be a vehicle traveling at 75mph north. Velocity is a vector quantity because it describes both magnitude and direction.
Fed [463]3 years ago
3 0

Answer: Velocity is speed and the direction where the speed is pointing.

If you have a map, with the y axis = north and the x axis = east. For you to describe your velocity, you must describe how fast are moving to north and how fast are you moving to east. So your velocity will be Vnorth + Veast, and this is a vector of the form (Vnorth, Veast). with total speed of \sqrt{Vnorth^{2} + Veast^{2} }.

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Answer:

3 feet down

Explanation:

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Which statements correctly describe the properties of air? Select three options. Air has mass but no weight. Air pressure is cre
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2,4,5

Air pressure is created by the weight of the atmosphere pushing on Earth’s surface.

Denser air is heavier than less dense air.

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A box is pulled up a rough ramp that makes an angle of 22 degrees with the horizontal surface. The surface of the ramp is the x-
kifflom [539]

Magnitude of the force  of tension: 139 N

Explanation:

The surface of the ramp here is assumed to be the positive x-direction.

To solve this problem and find the magnitude of the force of tension, we have to analyze only the situation along the x-direction, since the force of tension lie in this direction.

There are three forces acting along the x-direction:

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We know that the magnitude of the weight is

F_g=70.0 N

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The net force along the x-direction can be written as

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And therefore, since the net force is 98 N, we can find the magnitude of the force of tension:

F_T=F_x+F_f+F_{gx}=98+14.8+26.2=139 N

Learn more about inclined planes:

brainly.com/question/5884009

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8 0
3 years ago
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Please help me with this physics problem​
Vesna [10]

Answer:

idk

Explanation:

4 0
3 years ago
What is not an essential part of isolated soldier guidance
mel-nik [20]

Answer:

Option B, visual sightings

Explanation:

Options for the question are

A) accountability mechanism

B) visual sightings

C)  intelligence

D) surveillance

E) reconnaissance  operations, or communications

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The Fundamentals of Army Personnel Recovery (PR) outlines certain circumstances under which a person has to undergo survival situation thereby taking the necessary steps to avoid capture and return safely to their respective unit.

An isolated soldier is expected to know where they are, upcoming route and rally points. They are supposed to know the near and far recognition signals, recovery site protocols, challenge and password etc. A proper preparation is to be done for this including planning, medicines, kits, etc.  

Visual sightings is not an essential part of isolated PR

Hence, option B is correct

4 0
3 years ago
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