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
bearhunter [10]
3 years ago
11

a 7 kg object moving 10 m/s Right collides with a 14 kg object at rest. If after the collision the 7kg object is at rest and the

14 kg object is moving, what is the velocity of the 14 kg object after the collision?
Physics
1 answer:
Lesechka [4]3 years ago
4 0

Answer:

v2(final)=5 m/s

Explanation:

we are going to use the conservation of momentum here

m1*v1(initial)+m2*v2(initial)=m1*v1(final)+m2v2(final)

m1=7 kg  v1(initial)=10 m/s

m2=14 kg  v2(initial)=0 m/s (bc initially it is at rest)

v1(final)= 0 m/s (m1 stops moving after the collision)

v2(final)=?

7*10+14*0=7*0+14*v2(final)

70=14v2(final)

v2(final)=70/14 m/s=5 m/s

You might be interested in
Find the equivalent resistance.
frosja888 [35]

Answer:

18 Ω

Explanation:

As K and F are at the same voltage, we can redraw the diagram as in figure 2

Series resistances add directly, so we get figure 3

Adding parallel resistances gets us to figure 4

Now we can move two 6Ω resistances for clarification in figure 5

As the voltage between C and J will be identically split between D and H, there will be no voltage drop across the middle 6Ω resister and no current through it, identical to an infinite resistance, so that 6Ω can be eliminated as in figure 6

Add series resistances to get to figure 7

Add parallel resistances to get to figure 8

Add series resistances to get to figure 9

6 0
3 years ago
Read 2 more answers
What is the speed of a skater who travels a distance of 210 m in a time of 10 seconds?
Klio2033 [76]

21m per second. Take 210 divided by 10. Hope this helps!

7 0
4 years ago
Describe how wet and dry barometers work
siniylev [52]

Answer: Wet barometer - The tool works by measuring atmospheric pressure to predict incoming weather. Since the glass is only filled halfway with water, the other half is exposed to the atmosphere. When the outdoor atmospheric pressure rises, the pressure in the glass decreases, and causes the water to move down the spout.

Dry barometer - A Torricellian barometer (sometimes called a mercury barometer) is an inverted (upside-down) glass tube standing in a bath of mercury. Air pressure pushes down on the surface of the mercury, making some rise up the tube. The greater the air pressure, the higher the mercury rises.

I hope this helps!

7 0
3 years ago
If the velocity is constant, describe the the slope of the graph on a position vs. time graph.
kvv77 [185]

If the velocity is constant, then the position/time graph has a constant slope, meaning a straight line. 

The slope may be any constant value ... positive, negative, or zero.

             -∞  <  slope  <  +∞


5 0
3 years ago
Read 2 more answers
Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable,
vovangra [49]

Answer:

v =163.95 m/s

Explanation:

Given that,

The wavelength of wave, \lambda=646\ km=646\times 10^3\ m

Distance covered, d=3630\ km=3630\times 10^3\ m

We need to find the speed of the wave. We know that,

speed = distance/time

So,

v=\dfrac{3630\times 10^3\ m}{22140\ s}\\\\=163.95\ m/s

So, the speed of the wave is equal to 163.95 m/s.

6 0
3 years ago
Other questions:
  • If you know the power rating of an appliance and the current the appliance uses, you can calculate the voltage of the line it is
    12·2 answers
  • In a solid , the atoms are tightly locked in position an do not change posistion , true or false
    15·1 answer
  • Which of the following is required for work to be done on an object?
    10·1 answer
  • It was a children versus grown-ups competition at school. One event required the adult to throw a basketball as far as he could.
    15·2 answers
  • Which of the following is NOT a characteristic of scientific knowledge? please help me
    6·2 answers
  • The forklift exerts a 1,500.0 N force on the box and moves it 3.00 m forward to the stack. How much work does the forklift do ag
    12·1 answer
  • Can you find the density of water? How would you do it?
    11·1 answer
  • PLS HELP I HAVE EXAM ILL GIVE U BRAINLIST
    7·1 answer
  • Jeremiah is conducting an investigation about the water cycle. He is given the following
    12·1 answer
  • What is a appropriately?????​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!