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MariettaO [177]
3 years ago
13

.

Physics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

What-is-your-speed-as-you-cross-the-intersection-Assume-that-the-acceleration/ ... Paul-is-driving-at-a-constant-known-velocity-v-when-they-start-their-experiment/ ... /3-We-made-sure-to-keep-the-data-lists-for-each-position-separate-to-avoid/ ... -submarine-Squalus-sank-at-a-point-where-the-depth-of-water-was-730-m/ ...

Explanation:

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Calculate the kinetic energy of a 20-kg sled moving 28.0 m/s. Show your work in the space to the right.
suter [353]

Answer:

7840

Explanation:

K.e=1/2mv^2

=1/2(20)(28.0)^2

=7840J

5 0
3 years ago
An object with an initial speed of 4.0 meters per second accelerates uniformly at 2.0 meters per second squared in the direction
leva [86]

Answer:

6 m/s.

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 4 m/s

Acceleration (a) = 2 m/s²

Distance (s) = 5 m

Final velocity (v) =?

The final velocity of the object can obtained as shown below:

v² = u² + 2as

v² = 4² + (2 × 2 × 5)

v² = 16 + 20

v² = 36

Take the square root of both side.

v = √36

v = 6 m/s

Therefore, the final speed of the object is 6 m/s.

8 0
3 years ago
Ocean currents are formed by what type of heat transfer?
Anestetic [448]
Ocean currents are formed by a type of heat transfer that is convection

5 0
3 years ago
Read 2 more answers
If f(x) = -x2+x-1 then value of f(f(2)) is
qaws [65]

Answer:

<u>-13</u>

Explanation:

<u>Function</u>

  • f(x) = -x² + x - 1

<u>Solving</u>

  • Substitute 2 in place of x
  • f(2) = -(2)² + 2 - 1
  • f(2) = -4 + 2 - 1
  • f(2) = -3
  • f(f(2)) = f(-3)
  • f(-3) = -(-3)² - 3 - 1
  • f(-3) = -9 - 3 - 1
  • f(f(2)) = <u>-13</u>
6 0
2 years ago
A passenger plane is flying above the ground.Describe the two components of its mechanical enserfy
Goryan [66]
The force and the air resistance depends on the mechanical enserfy.
3 0
3 years ago
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