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ella [17]
3 years ago
5

an object is thrown with an initial speed v near the surface of earth. assume that air resistance is negligible and the gravitat

ional field is constant. if the object is thrown vertically upward, the direction and magnitude of its acceleration while it is in the air is
Physics
2 answers:
natka813 [3]3 years ago
7 0

Hi there!

a = -9.81 m/s²

When throwing a ball into the air (ignoring air resistance), the acceleration in the vertical direction is ALWAYS constant and equal to the acceleration due to gravity.

In this instance, the acceleration due to gravity is downward, resulting in the object falling. So, we must put a negative sign:

Thus, a = -9.81 m/s².

nydimaria [60]3 years ago
6 0

Answer:

what

Explanation:

Kagaya mo di krin alam

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When heat activates sweat glands, these glands bring that water, along with the body's salt, to the surface of the skin as sweat. Once on the surface, the water evaporates. Water evaporating from the skin cools the body, keeping its temperature in a healthy range.

Explanation:

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7 0
3 years ago
if a ball is released from a height 80cm how long would it take the ball to reach the ground when g= 10m per seconds​
VLD [36.1K]

Answer:

The ball took 0.4 seconds

Explanation:

» From the second newton's equation of motion.

{ \boxed{ \tt{s = ut +  \frac{1}{2} {gt}^{2}  }}}

  • s is displacement, s = 80cm, s = 0.8 meters
  • u is initial velocity, u = 0 [ from rest ]
  • g is 10 m/s²

{ \tt{0.8 = (0 \times t) + ( \frac{1}{2}  \times 10 \times  {t}^{2} )}} \\  \\ { \tt{0.8 = 5 {t}^{2} }} \\ { \tt{ {t}^{2} = 0.16 }} \\ { \tt{t =  \sqrt{0.16} }} \\  \\ { \underline{ \underline{ \tt{ \: time = 0.4 \: seconds \:  \: }}}}

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3 years ago
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Answer: you are the person in charge of building a nuclear power plant in Florida. your first choice is to select a site for building the power plant.

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<h3>What you mean by nuclear power plants?</h3>
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<h3>How to select the site for nuclear power plant?</h3>
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  • Water availability and fuel availability.
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Thus, we can conclude that, before building a nuclear power plant, our first choice should be to select a site.

Learn more about the nuclear power plants and the criteria to select the site for power plant here:

brainly.com/question/28045272

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Explanation:

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