Question 8 An open box-car has a mass of 30,000 kg and is moving on a...
Question 8
An open box-car has a mass of 30,000 kg and is moving on a level railroad track at 4.00 m/s. 1,000 kg of water falls straight down into the box-car. The velocity of the box-car after the water falls into the box-car is
|
7.01 m/s. |
||
|
6.55 m/s. |
||
|
5.02 m/s. |
||
|
3.87 m/s. |
||
|
2.89 m/s. |
Homework Answers
Box car mass before the water falls on it =
,
velocity=
Box car mass after the water falls on it = 
, let
the velocity be 
Due to momentum conservation, 
Add Answer to:
Question 8
An open box-car has a mass of 30,000 kg and is moving on a...
Need help asap. And I only have one attempt left An open railroad car of mass...
Need help asap. And I only have one attempt left
An open railroad car of mass 2402 kg is coasting with an initial speed of 19 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 9 m/s. How much water (in kilograms) has accumulated in the car? 2668.8 kg Consider the collision between two hockey pucks in the...
An unpowered railroad car of mass 200kg rolls with negligible friction on a horizontal track with...
An unpowered railroad car of mass 200kg rolls with negligible friction on a horizontal track with a speed of 10 m/s. A 100-kg hobo drops straight down a distance of 4.0 m, from an overpass and lands in the car. How fast will the car be moving after this happens? please write on piece paper Also draw helps me to understand
An open train car, with a mass of 2030 kg, coasts along a horizontal track at...
An open train car, with a mass of 2030 kg, coasts along a horizontal track at the speed 2.33 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 3.41 s at the rate of 425 kg/s. What is the car\'s speed after the loading is completed? Ignore rolling friction (as unrealistic as that may be).
A railroad car with a mass of 13000 kg collides and couple with a second car...
A railroad car with a mass of 13000 kg collides and couple with a second car of mass 20,000kg that is initially at rest. the first car is moving with a speed of 3.5 m/s prior to the collision. a) what is the initial momentum of the first car ? b) if external forces can be ignored, what is the final velocity of the two railroad cars after they couple.
A railroad car with a mass of 1.95 ✕ 104 kg moving at 2.88 m/s joins...
A railroad car with a mass of 1.95 ✕ 104 kg moving at 2.88 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.56 m/s. (a) What is the speed of the three joined cars after the collision? m/s (b) What is the decrease in kinetic energy during the collision? J
a 0.199 kg snowball moving west makes an inelastic collision with a 2.89 kg box moving...
a 0.199 kg snowball moving west makes an inelastic collision with a 2.89 kg box moving 0.523 m/s west. after ward, they move west at 1.92 m/s. what was the initial velocity of the snowball
A railroad car of mass 3.25e4 kg is moving at 3.25 m/s collides and couples with...
A railroad car of mass 3.25e4 kg is moving at 3.25 m/s collides and couples with two couples railroad cars, each of the same mass as the single car and moving in the same direction at 1.20m/s. A) what is the speed of the three coupled cars after the collision? B) how much kinetic energy is lost in the collision?
A railroad car of mass 3.10 ✕ 104 kg moving at 3.40 m/s collides and couples...
A railroad car of mass 3.10 ✕ 104 kg moving at 3.40 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?
A railroad car of mass 3.15 ✕ 104 kg moving at 2.75 m/s collides and couples...
A railroad car of mass 3.15 ✕ 104 kg moving at 2.75 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?
A railroad car of mass 2.95 ✕ 104 kg moving at 3.10 m/s collides and couples...
A railroad car of mass 2.95 ✕ 104 kg moving at 3.10 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? J
Need help asap. And I only have one attempt left
An open railroad car of mass 2402 kg is coasting with an initial speed of 19 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 9 m/s. How much water (in kilograms) has accumulated in the car? 2668.8 kg Consider the collision between two hockey pucks in the...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago