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lilavasa [31]
3 years ago
8

A 1,650 kg SUV comes uniformly to a stop. If the vehicle is accelerating at -1.3 m/s^2,

Physics
1 answer:
lions [1.4K]3 years ago
4 0

Answer:b

Explanation:

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A man can throw a ball a maximum horizontal distance of 56.1523 m. The acceleration of gravity is 9.8 m/s 2 . How far can he thr
IceJOKER [234]

Answer:

hmax= 28.2 m

Explanation:

Horizontal movement:

  • For the horizontal movement, as once released, nothing exerts any influence on the ball in the horizontal direction, it will keep moving at a constant speed, so, the equation for the horizontal displacement is as follows:

        x = v₀*t = 56.1523 m

Vertical movement:

  • For the vertical movement, once thrown upward, the ball is under the sole influence of gravity, g, which causes the ball to accelerate downward, and which magnitude is 9.8 m/s².
  • At any time, applying the definition of acceleration, we can find the value of the velocity, as follows:

        vf = vo-g*t

  • When the ball reaches to the maximum height, the ball will come momentarily at rest, so vf =0.
  • At this point, we can find the time at which  the ball reached to its highest point, as follows:

        t = \frac{vo}{g}

  • In the same way, we can find the maximum height reached by the ball, just replacing this value of time in the equation for the displacement, in the vertical direction, as follows:

        h = vo*t -\frac{1}{2} *g*t^{2}

        hmax = vo*(\frac{vo}{g}) -\frac{1}{2} *g*(\frac{vo}{g} )^{2} =\frac{vo^{2}}{2*g}

  • Now, returning to the horizontal movement, as the time must be the same for both movements, we can replace the value for time we have just found, in the equation for the horizontal displacement:

       x = v0x * t = v0x* \frac{voy}{g}

  • But as we know that vox = voy, we can rewrite the equation above as follows:

       x = v0* t = v0* \frac{vo}{g} =\frac{vo^{2} }{g} = 56.1523 m

  • We can solve for v₀, as follows:

        vo = \sqrt{56.1523 m *9.8 m/s2} =23.5 m/s

  • Now, we can replace this value in the expression for hmax, as follows:
  • hmax = \frac{vo^{2}}{2*g} =\frac{(23.5m/s)^{2}}{2*9.8 m/s2} =  28.2 m
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3 years ago
What type of front involves fast moving thunderstorms and severe weather?
Lapatulllka [165]
The answer is "Cold Front".

A cold front is characterized as the change zone where a cool air mass is supplanting a hotter air mass. Cold fronts for the most part move from northwest to southeast. The air behind a cold front is recognizably colder and drier than the air in front of it.
6 0
3 years ago
Which scientist invented a model of the atom that most closely resembles the modern electron cloud model
Alex Ar [27]
Bohr, he invented the Bohr model which is the basis for the beginning of quantum physics.
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2 years ago
What is the first law of thermodynamics?​
jok3333 [9.3K]

Answer:

it states that energy can neither be created or destroyed

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2 years ago
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MGS and later orbiters found spectral evidence for what minerals on the Martian surface? Check all that apply.
slamgirl [31]

Mars Global Surveyors (MGS) and later orbiters found the following  minerals on the  Martian surface;

  • Phyllosilicates
  • Carbonate
  • Sulfates
  • Iron oxide

The Mars Global Surveyors (MGS) and later orbiters suggest that the Martian crust contains a higher percentage of volatile elements such as Sulphur and chlorine than the Earth's crust does.

These scientists also conclude that the most abundant chemical elements  in the Martian crust are those found in Igneous rock.

These elements include the following;

  • Silicon,
  • Oxygen,
  • Iron,
  • Magnesium,
  • Aluminum,
  • Calcium, and
  • Potassium.

They also, suggest that hydrogen is found in ice (water) while carbon is found in carbon dioxide and carbonates.

From the given options the minerals found in Martian surface include;

  • Phyllosilicates ------ these are sheet of silicate minerals
  • Carbonate
  • Sulfates
  • iron oxide

Learn more here: brainly.com/question/20470323

6 0
2 years ago
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