theylovenylah
06.12.2020 •
Mathematics
A bird is sitting on a train A moving at a speed of 40 kmph. It sees another train B at a Distance of 200 ms with Speed of 60 kmph coming from the opposite direction on the same rail track. It flies with an average speed of 10kmph and sits on another train. Again immediately it flies back to the first train and again to the second train and so on. It does so before the two trains crash. What is the total distance travelled by the bird?
Solved
Show answers
More tips
- L Leisure and Entertainment What to Give a Girl on March 8?...
- H Health and Medicine Heartburn: Causes and Ways to Get Rid of It...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- W Work and Career Мерчендайзинг – все, что нужно знать...
- O Other Everything You Need to Know About Kudyabliks...
- F Food and Cooking How to cook crayfish? Everything you need to know...
- F Food and Cooking Homemade kvass: recipe and brewing process...
- H Health and Medicine How to Choose the Right Tanning Cream?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
Answers on questions: Mathematics
- M Mathematics If f(x) = x2, g(x) = 5x, and h(x) = x + 4, find each value. 17. g[h(–2)] a. 7 b. 10 c. 30 d. 100...
- M Mathematics Solve for the system algebraically...
- P Physics What is the average amount of time an American spends consuming media in a week? A. 10 hours B. 18 hours C. 22 hours D. 28 hours Please collect the best answer from the choices...
- M Mathematics Write an expression that is equivalent to 9.7 – 3.2 ...
- M Mathematics Consider the geometric sequence: 1, 3, 9, 27, \dots1,3,9,27,…1, comma, 3, comma, 9, comma, 27, comma, dots If nnn is an integer, which of these functions generate the sequence?...
- H Health Question 3 (1 point) Female gametes contain one chromosome more than male gametes. O True False...
Ответ:
Two trains are moving in opposite direction with Speed 40 kmph and 60 kmph. Make train B stationary and then take the Speed of train A relative to the train B. So relative Speed of train A = 40 + 60 = 100 kmph. Before it crashes into the stationary train B it has to travel a Distance of 200 m which it will do in (0.2/100 ) hours. During this duration, the average Speed of bird has been 10 kmph i.e. before the crash total Distance covered by the bird = 0.2 * 10/100 km = 20 meters.
Hope it helps
Ответ:
D.) is the correct answer 8ab + 12a – 2b – 3
Step-by-step explanation: