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VikaD [51]
3 years ago
13

An object increases vert its velocity from 22M/S 236M/S and five seconds. What is the acceleration of the object

Physics
1 answer:
MariettaO [177]3 years ago
6 0

Answer:

\boxed {\boxed {\sf a=42.8 \ m/s^2}}

Explanation:

Acceleration can be found by dividing the change in velocity by the time.

a=\frac{v-u}{t} (<em>v </em>is the final velocity, <em>u</em> is the initial velocity, <em>t </em>is the time).

The velocity increased from 22 m/s to 236 m/s in 5 seconds. Therefore:

v=236 \ m/s\\u=22 \ m/s\\t= 5 \ s

Substitute the values into the formula.

a=\frac{236 \ m/s - 22 \ m/s}{5 \ s}

Subtract in the numerator.

  • 236 m/s-22 m/s=214 m/s

a=\frac{214 \ m/s}{5 \ s}

Divide.

a=42.8 \ m/s^2

The acceleration of the object is <u>42.8 meters per square second.</u>

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What are some of the social and psychological benefits of participating in team sports for kids
julsineya [31]

Answer:

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Explanation:

5 0
3 years ago
A duck flies in a straight line for 500m (60° N of W)
Rashid [163]

(A) The angle of this in polar coordinates is 30⁰.

(B) The North/South and East/West components of its displacement is 250 m and 433 m respectively.

<h3>The angle is this in polar coordinates</h3>

60° N of W lies in the fourth quadrant;

θ = 90 - 60 = 30⁰

in polar coordinate = (r,θ) = (500 m, 30⁰)

<h3>Vertical component of the displacement (North/South)</h3>

Dy = D sinθ

Dy = 500 m x sin(30) = 250 m

<h3>Horizontal component of the displacement (East/West)</h3>

Dx = D cosθ

Dx = 500 m x cos(30) = 433 m

Thus, the angle of this in polar coordinates is 30⁰.

The North/South and East/West components of its displacement is 250 m and 433 m respectively.

Learn more about polar coordinates here: brainly.com/question/4522672

#SPJ1

4 0
2 years ago
Which acceleration does the force of earth’s gravity produce?
aev [14]

I think its A

hope this helps

5 0
3 years ago
Suppose someone caused a book to fall from the shelf to the ground. Compared to the total sum of kinetic and potential energy th
gavmur [86]

Answer:

book resting on a shelf has no potential energy relative to the shelf since it has a height of zero meters relative to the shelf. However, if the book is elevated to some height above the shelf, then it has potential energy proportional to the height at which it resides above the shelf.

An object can have both kinetic and potential energy at the same time. For example, an object which is falling, but has not yet reached the ground has kinetic energy because it is moving downwards, and potential energy because it is able to move downwards even further than it already has. The sum of an object's potential and kinetic energies is called the object's mechanical energy.

As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.

Another important concept is work.

6 0
3 years ago
The 4.0-kg head of an ax is moving at 36 m/s when it strikes a log and penetrates 0. 03 m (3 cm) into the log. What is the avera
scoundrel [369]

Answer:

Explanation:

To calculate the force we will use newton second law,

F = ma

Where

F is the force

m is the mass of the body

a is the acceleration of the body

Given that the mass is 4kg

Then, applying equation of motion to know the acceleration of the body when it hit the log.

Initially before it hit the log, the velocity of 36m/s

Initial velocity u = 36m/s

Then, finally the object came to rest, then, final velocity is 0m/s

v = 0m/s,

During this period, the object travelled a distance of 0.03m

Then, using equation of motion

v² = u² + 2as

0² = 36² + 2 × a × 0.03

0 = 1296 + 0.06a

-0.06a = 1296

a = 1296 / 0.06

a = -43,200 m/s²

The negative sign shows that the object sea decelerating in the log.

So, a = 43,200 m/s²

Then, applying the Newton second law formula

F = ma

F = 4 × 43,200

F = 172,800 N

The average force exert on the wood is 172,800 N

3 0
3 years ago
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