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Ilya [14]
3 years ago
14

A NASA explorer spacecraft with a mass of 1,000 kg takes off in a positive direction from a stationary asteroid. If the velocity

of the spacecraft is 250 m/s and the asteroid is pushed back –25 m/s, what is the mass of the asteroid? Assume there is no net force on the system.
A) 100 kg
B) 6,250 kg
C) 10,000 kg
D) 6,250,000 kg
Physics
2 answers:
Jet001 [13]3 years ago
3 0

Before the launch, the momentum of the (spacecraft + asteroid) was zero.  So after the launch, the momentum of the (spacecraft + asteroid) has to be zero.

Momentum = (mass) x (velocity)

Momentum after the launch:

Spacecraft:  (1,000 kg) x (250 m/s) = 250,000 kg-m/s

Asteroid: (mass) x (-25 m/s)

Their sum:  250,000 - 25(mass) .

Their sum must be zero, so  250,000 kg-m/s = (25 m/s) x (mass)

Divide each side by  25 :  10,000 kg-m/s = (1 m/s) x (mass)

Divide each side by (1 m/s) :  10,000 kg = mass


Deffense [45]3 years ago
3 0

Answer:

IT IS C EDGEINUTY

Explanation:

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From the question

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We have

force = 1700 × 4.75

We have the final answer as

<h3>8075 N</h3>

Hope this helps you

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Is this an open or a closed circuit?
ANTONII [103]

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6 0
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A 2.00-kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the
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0.82052 m

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4 0
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patriot [66]

Answer:

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al ser homogenea no se puede percibir con la vista pero si se le agrega acido sulfurico la reaccion hara que el hidrogeno y el oxigeno se evaporen dejando unicamente una masa negra de carbono

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Explanation:

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4 0
4 years ago
A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how
Eduardwww [97]
Here's a fun and useful factoid:

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I'll bet you can take it and solve it from here.
Just cross-multiply in the proportion and etc. etc.
6 0
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