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Musya8 [376]
1 year ago
15

FInal physics question please help asap

Physics
1 answer:
blondinia [14]1 year ago
5 0

The cannonball will be 311.8 m far in meter when it travels horizontally

<h3>What is a Projectile ?</h3>

A projectile is any object like stone, ball or javelin that take a parabolic path when thrown into the air.

The following parameters are given from the question

  • Ф = 30°
  • u = 60 m/s
  • g = 10 m/s²
  • R = ?

Resolve the initial velocity into horizontal and vertical components. That is,

  • Horizontal component = ucosФ
  • Vertical component = usinФ

To calculate the range that is, the horizontal distance, will can first calculate the total time take by the ball to reach the ground.

Total time T = 2usinФ / g

Substitute all the parameters

T = (2 x 60sin30) / 10

T = (2 x 30) / 10

T = 60 / 10

T = 6 s

The horizontal distance R = ucosФ x T

R = 60 x cos 30 x 6

R = 311.77 m

Therefore, the cannonball will travel 311.8 m approximately horizontally.

Learn more about Projectile here: brainly.com/question/24949996

#SPJ1

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Answer:

c. joules

Explanation:

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Work done can be defined as the rate at which a force acting on an object or a body causes it to experience a displacement. The work done is a scalar quantity and is measured in joules (J).

Mathematically, work done is given by the formula;

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W = F * d

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Explanation:

A vector is parallel to the y axis .

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where i and j are unit vectors in x and y axis direction .

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Perform the calculation and report your answer using sig figs. 657.70 - 26.543
Anton [14]

Answer:

The answer is 631.157

Explanation:

The question requested that the answer to the subtraction of 26.543 from 657.70 must be written using significant figures.

Here are a few tips about how to Identify significant figures.

1) It should be noted that <u>the number "0" is what is usually (but not always) affected</u> while trying to identify significant figures. Hence, <u>all other numbers/digits are always significant</u>. For example, 26.543 has five significant figures.

2) The zeros found between these "other numbers/digits" are also significant. For example, 2202 has four significant figures.

3) In the case of a decimal, the tailing zeros or the final zero is also significant. 657.70 and 657.07 have five significant figures.

Now, back to the question

657.70  - 26.543  = 631.157.

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8 0
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How would the terminal velocity of a piece of tissue paper compare to the terminal velocity of a rock?
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Answer: Rock require larger drag force and to achieve it rock need to move at a very high terminal velocity.  

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Rock will attain terminal velocity when Mg = f_{2}

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so, f_{2} > f_{1}

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