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seraphim [82]
3 years ago
10

What statement is true because of Newton's Second Law?

Physics
2 answers:
velikii [3]3 years ago
8 0
<span>C. When the net force of an object decreases, the acceleration decreases

'cause they both are directly proportional to each other

Hope this helps!
</span>
andreyandreev [35.5K]3 years ago
3 0

was the answer even right


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Alecsey [184]

Answer:

Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines.

Explanation:

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The law of conservation of energy and describe the energy transformation that occur as you coast down a long hill on a bicycle a
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As you coast down a long hill on your bicycle, potential energy from your height is converted to kinetic energy as you and your bike are pulled downward by gravity along the slope of the hill. While there is air resistance and friction slowing you down by a little bit, your speed increases gradually until you apply the brakes, causing enough friction to slow yourself and the bike to a stop at the bottom

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A physics student of mass 51.0 kg is standing at the edge of the flat roof of a building, 12.0 m above the sidewalk. An unfriend
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Answer:

Explanation:

The wheel and falling student will have common acceleration .

For rotational motion of wheel

Tx r = I α , T is tension in the crank , α is angular acceleration of wheel  , I is moment of inertia , r is radius of the wheel.

= I a / r

T = I a / r²

For motion of student

Mg - T = Ma , M is mass of the wheel.

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Mg = Ma +I a / r²

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a = Mg / (M +I  / r²)

= 51 x 9.8 / ( 51 + 9.6 / .3² )

499.8 / (51+ 106.67 )

= 499.8 / 157.67

= 3.17 m / s².

If time t is taken to  fall by 12 m

12 = 1/2 a t²

24 / a = t²

24 / 3.17 =t²

t²= 7.57

t = 2.75 s

velocity to reach sidewalk

v = u + at

= 3.17  x 2.75

= 8.72 m / s

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3 years ago
Which statement is TRUE about the factors affecting physical fitness?A.
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D

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Which of these waves can NOT travel through the vacuum of space?
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Sound waves <span>can NOT travel through the vacuum of space?</span>
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