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3 years ago

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When an object is falling and reaches a constant velocity, the net force on the object is ____ and the weight of the object is e

qual to____
A. zero; the mass of the object
B. 10; the speed at which the object is falling
C. 10; acceleration due to gravity
D. Zero; the force of air resistance against the object

1 answer:

Maslowich3 years ago

5 0

When an object is falling and reaches a constant velocity, the net force on the object is <em>zero</em> (it's not accelerating), and the weight of the object is equal to <em>the force of air resistance against the object</em>. (choice-D)

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Answer:

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Explanation:

Given that,

Mass = 3.00 kg

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Time = 2.00 s

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For x coordinates

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On differentiate again w.r.to t

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$y=3t^2+2$

On differentiate w.r.to t

$\dfrac{dy}{dt}=6t+0$

On differentiate again w.r.to t

$\dfrac{d^2y}{dt^2}=6$

The acceleration in y axis at 2 sec

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The acceleration is

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$F = ma$

$F = 3.00\times(60i+6j)$

$F=180i+18j$

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$|F|=180.89\ N$

Hence, The net force acting on this object is 180.89 N.

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4 years ago

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antiseptic1488 [7]

All matter is made up of subatomic particles that contain atoms. This is false statement.

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Answer:

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Explanation:

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$v = 343 m/s$

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3 years ago