![jalenshayewilliams](/avatars/25203.jpg)
jalenshayewilliams
30.10.2019 •
Physics
Acannon on a railroad car is facing in a direction parallel to the tracks. it fires a 98.0-kg shell at a speed of 215 m/s (relative to the ground) at an angle of 60.0° above the horizontal. if the cannon plus car have a mass of 5.00 × 104 kg, what is the recoil speed of the car (relative to the ground) if it was at rest before the cannon was fired? express your answer in m/s.
Solved
Show answers
More tips
- F Food and Cooking How to Make Lazy Cabbage Rolls? Simple Steps to a Delicious Dish...
- F Food and Cooking Unusually Delicious Shashlik - Follow the Etiquette of Proper Preparation!...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
Answers on questions: Physics
- P Physics A Fleas can jump up a distance as large as 33 cm horizontally in a single leap (they are only 0.3 mm in size!). What is their launch velocity v if you assume they use...
- P Physics We know that the work done by any thermodynamic process is, in general, found by the relation: , = − 8 /01 23 24 Using the Ideal Gas Law (PV=nRT), derive relations for...
- P Physics Three forces act on a statue. Force F⃗ 1F→1 (magnitude 45.0 NN) points in the +x-direction, Force F⃗ 2F→2 (magnitude 105 NN) points in the +y-direction, and force F⃗ 3F→3...
- P Physics A garden hose attached with a nozzle is used to fill a 20-gal bucket. The inner diameter of the hose is 1 in, and it reduces to 0.5 in at the nozzle exit. The average...
- P Physics When a mass of 4 kilograms is attached to a spring whose constant is 64 N/m, it comes to rest in the equilibrium position. Starting at t = 0, a force equal to f(t) = 136e−2t...
- P Physics Water flows over a section of Niagara Falls at a rate of 1.31 × 106 kg/s and falls 71 m. The acceleration of gravity is 9.8 m/s 2 . How many 40 W bulbs can be lit with...
- P Physics Two identical resistors are connected first in series and then in parallel. Which combination has the larger net resistance? the pair in series the pair in parallel The...
- P Physics A mass weighing 6.4 pounds will stretch this spring 1.28 feet. The spring/mass system is damped by a force that is 1.6 times the instantaneous velocity of the mass. Determine...
- P Physics A machine at a post office sends packages out a chute and down a ramp to be loaded into delivery vehicles. (a) Calculate the acceleration of a box heading down a 10.0°...
- P Physics Do you think you would like to do arson or explosion investigation or evidence testing? why or why not?...
Ответ:
Explanation:
given,
mass of the shell = 98 kg
speed of the shell = 215 m/s
mass of the cannon + car = 5 × 10⁴ Kg
angle made with horizontal = 60°
velocity of recoil = ?
using momentum conservation because no other force component is acting
∑ P = 0
now,
velocity of the car is in negative direction of x.
Ответ:
Answ. B and C
Explanation: