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
vitfil [10]
3 years ago
6

- A 9,300 kg. railroad car traveling at a velocity of 15m/s strikes a second boxcar

Physics
1 answer:
VARVARA [1.3K]3 years ago
5 0

Answer:

13950kg

Explanation:

If we make the system both railroad cars, we know that the momentum of the whole system doesn't change because the forces are internal.

Let a be the mass of the second car.

The original momentum is 9300*15 kg*m/s+ a*0 kg*m/s = 139500 kg*m/s

After sticking together, the momentum is (9300+a)kg*6m/s, which should be equal to 139500 kg*m/s

Therefore (9300+a)*6 = 139500

9300+a = 23250

a = 13950 kg

You might be interested in
Find the change in the force of gravity between two planets when the distance between them is reduced to one-tenth of the origin
Fofino [41]
The equation for gravitational force is provided. If you were to put 1/10 times d (distance) than 1/10 would be squared = 1/100. So the gravitational force would be 100 times more.

7 0
3 years ago
The Law of Reflection states that the Angle of Incidence will always be
VladimirAG [237]

Answer: option c) equal to the angle of reflection.

HOPE IT HELPS YOU

HAVE A GOOD DAY ❤️☺️

7 0
3 years ago
  do batteries produce or make energy
melamori03 [73]
Batteries Produce energy
3 0
3 years ago
Read 2 more answers
In what factors sound can be heard​
MariettaO [177]

Explanation:

Loudness of sound is a measure of response of sound to our ear. Loudness of sound is not simply the energy reaching the human ear, but it also tells about the sensitivity of human ear detecting this energy. Loudness of sound is measured in decibel (dB). As energy reaching the ear depends on square of amplitude, loudness of sound depends on various factors namely,

(i) Amplitude of sound waves

(ii) Sensitivity of ear

(iii) Distance from the source of the sound and the listener.

6 0
3 years ago
Read 2 more answers
What is a major contributor of greenhouse gases in the atmosphere?
ASHA 777 [7]

Answer:

a. burning of fossil fuel

Explanation:

Greenhouse effect is the trapping of the sun infrared rays in the outermost layer of the earths atmosphere due to the accumulation of some harmful gasses. This gases depletes the ozone layer

The major contributor of greenhouse gases is the burning of fossil fuels. Carbon dioxides are released into the atmosphere and leads to global warming and climatic changes per time

6 0
3 years ago
Other questions:
  • A 10.0 L balloon contains helium gas at a pressure of 660 mmHg . What is the final pressure, in millimeters of mercury, of the h
    15·1 answer
  • A treasure map instructs you to walk (25.0+A) m south, followed by (18.0+B) m east, then 64.5 m north, and finally 28.5 m east.
    15·1 answer
  • You are looking at your textbook. you can see the textbook because of light doing what process when it hits the textbook's surfa
    6·1 answer
  • How can operators avoid damaging Submersed Aquatic Vegetation (SAV) beds that are usually found in shallow areas of water?
    15·1 answer
  • There are many units of pressure. The standard one is Pa. Express Pa using only the fundamental units of meters, kilograms and s
    13·1 answer
  • Why was the st valentine's day massacre important? And why are students studying this case?
    14·1 answer
  • Why is faulting most likely to occur near earth's surface and not deep within earth ?
    9·1 answer
  • What is the life cycle of a eukaryotic cell called?
    15·1 answer
  • When a substance easily dissolves in a liquid, it has high solubility in that liquid. When a substance does not easily dissolve
    7·1 answer
  • Write an essay about the Paralympic and Special Olympic Essay 100 points
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!