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Oksi-84 [34.3K]
3 years ago
6

Witch one is right

Physics
1 answer:
AveGali [126]3 years ago
5 0
I think b is the right one
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An arrow is shot at a target 20 m away. The arrow is shot with a horizontal velocity of 80 m/s.
Verdich [7]

(1) The time of motion of the arrow is 0.25 s.

(2) The vertical height dropped by the arrow as it approaches the target is 0.31 m.

The given parameters:

  • <em>Horizontal distance of the arrow, X = 20 m</em>
  • <em>Horizontal speed of the arrow, v = 80 m/s</em>

<em />

The time of motion of the arrow is calculated as follows;

t = \frac{X}{v} \\\\t = \frac{20 }{80} \\\\t  = 0.25 \ s

The vertical height dropped by the arrow as it approaches the target is calculated as follows;

h = v_0_y t + \frac{1}{2} gt^2\\\\h = 0 \ + \ \frac{1}{2} \times 9.8 \times 0.25^2\\\\h =0.31 \ m

Learn more about time of motion of projectile here:  brainly.com/question/1912408

4 0
2 years ago
How do the nonliving parts of earth's systems provide the basic materials to support life?
MatroZZZ [7]
The abiotic community of the ecosystem or the nonliving objects in the earth's biosphere influences the survival, growth and development of the organism. They provide basic mmaterials to support life by the biogeochemical processes which is composed of many biological and environmental cycles which profoundly has factored the intiation and continuation of life on earth. They also provide the basic materials to support life by the undergoing process which is also initiated by the living creatures or the biotic society of the ecosystem.
3 0
3 years ago
What is a tornado? Details
ohaa [14]
A tornado is a natural force It is a very strong wind that causes thing to damage
6 0
4 years ago
Read 2 more answers
Discuss how a photon (aka the light particle) can be affected by gravity despite being massless.
Over [174]

Explanation:

Light is clearly affected by gravity, just think about a black hole, but light supposedly has no mass and gravity only affects objects with mass. On the other hand, if light does have mass then doesn't mass become infinitely larger the closer to the speed of light an object travels.

4 0
3 years ago
A car moving at a speed of 20m/s has a kinetic energy of 300,000 J what’s the cars mass
Alexxx [7]

Answer:

<h2>1500 kg</h2>

Explanation:

The mass of the car can be found by using the formula

m =  \frac{2k}{ {v}^{2} }  \\

From the question we have

m =  \frac{2 \times 300000}{ {20}^{2} }  =  \frac{600000}{400}  =  \frac{6000}{4}  \\

We have the final answer as

<h3>1500 kg</h3>

Hope this helps you

7 0
3 years ago
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