1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lbvjy [14]
3 years ago
13

Two rocks collide in outer space. Before the collision, one rock had mass 11 kg and velocity ‹ 4250, −2950, 2500 › m/s. The othe

r rock had mass 6 kg and velocity ‹ −700, 2150, 3700 › m/s. A 1 kg chunk of the first rock breaks off and sticks to the second rock. After the collision the 10 kg rock has velocity ‹ 1500, 300, 1900 › m/s. After the collision, what is the velocity of the other rock, whose mass is now 7 kg?
Physics
1 answer:
Svet_ta [14]3 years ago
3 0

Answer:

p_7kg,f=(25100-15000,38,500)m/s

Explanation:

In the collision the total momentum of the system is conserved so we only need to sum up the moments of our two rocks before and after the collision.  

p_11kg,i+p_6kg,i=p_10kg,f+p_7kg,f

11kg(4250, −2950, 2500)m/s+6(−700, 2150, 3700)m/s=10kg(1500, 300, 1900)m/s+p_7kg,f

(46,750-32,450,27,500)kgm/s+(4,200‬-12,900‬,22,200‬)kgm/s=(15,000‬-3000‬,19,000‬)kgm/s+p_7kg,f

p_7kg,f=(46,750-32,450,27,500)kgm/s+(4,200‬-12,900‬,22,200‬)kgm/s-(15,000‬-3000‬,19,000‬)kgm/s

p_7kg,f=(25100-15000,38,500)m/s

You might be interested in
A motorcycle has a speed of 30 m / s. After braking, it decelerates with constant deceleration A = -3.0 m / s ^ 2
marin [14]

a = \displaystyle\frac{v-u}{t}

-3 = \displaystyle\frac{v - 30}{3}

v -30 = -9

v = 21 m/s

4 0
3 years ago
Read 2 more answers
When plugging in metric facts, always remember that 1 big unit = # small units. Fill in these facts: 1.________ s= ________μs 2.
balandron [24]

Answer:

1. 1 s = 1 x 10⁶ μs

2. 1 g = 0.001 kg

3. 1 km = 1000 m

4. 1 mm = 1 x 10⁻³ m

5. 1 mL = 1 x 10⁻³ L  

6. 1 g = 100 dg

7. 1 cm = 1 x 10⁻² m

8. 1 ms = 1 x 10⁻³ s

Explanation:

1.

1 x 10⁻⁶ s = 1 μs

(1 x 10⁻⁶ x 10⁶) s = 1 x 10⁶ μs

<u>1 s = 1 x 10⁶ μs</u>

2.

1000 g = 1 kg

1 g = 1/1000 kg

<u>1 g = 0.001 kg</u>

3.

<u>1 km = 1000 m</u>

<u></u>

4.

<u>1 mm = 1 x 10⁻³ m</u>

<u></u>

5.

<u>1 mL = 1 x 10⁻³ L</u>

<u></u>

6.

1 x 10⁻² g = 1 dg

(1 x 10⁻² x 10²) g = 1 x 10² dg

<u>1 g = 100 dg</u>

<u></u>

7.

<u>1 cm = 1 x 10⁻² m</u>

<u></u>

8.

<u>1 ms = 1 x 10⁻³ s</u>

4 0
3 years ago
I. The spring does work on the box from the moment the box first hits the spring to the moment the spring first reaches its maxi
nalin [4]

Answer:

Negative

Explanation:

If the box is heading right in the positive direction, the work will be negative. The spring has an opposite force to that of the box.

Hope this helped. :)

6 0
3 years ago
A machine with a mechanical advantage of 10 is used to produce an output force of 250 Newton’s. What input force is applied to t
finlep [7]

Answer:

que tue nesisitas

Explanation:

4 0
3 years ago
How long does it take to travel a distance of 672km at a speed of 95km/h?
Brilliant_brown [7]

Answer:

7.07 hours

Explanation:

divide the distance by the speed

so in this case, divide 672 by 95

6 0
2 years ago
Other questions:
  • A jetliner leaves san francisco for new york, 4600 km away. with a strong tailwind, its speed is 1100 km/hr. at the same time, a
    13·1 answer
  • Features that describe motion of an object
    11·1 answer
  • Impulse is defined as the average force acting on an object multiplied by the time the force acts. If we let I represent impulse
    11·1 answer
  • Describe how the speed of light waves changes when they travel from air into a
    8·2 answers
  • A 4.55 nF parallel-plate capacitor contains 27.5 μJ of stored energy. By how many volts would you have to increase this potentia
    6·1 answer
  • What is a fundamental difference between gravitational forces and electrostatic forces?
    7·1 answer
  • What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Show pro
    10·1 answer
  • TWO forces, one of 12N and another or 24N
    7·1 answer
  • ? Any idea on this I’m getting some mixed up
    7·1 answer
  • If the satellite has a mass of 3900 kg , a radius of 4.3 m , and the rockets each add a mass of 210 kg , what is the required st
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!