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Alla [95]
2 years ago
11

Please need now! A. Compute for the average speed Average Speed = distance travelled time taken 1. A bus travels a distance of 3

00 km in 5 hours 2. Ajet travels 4.000 km in 8 hours 3. An athlete 10 km in 2 hours 4. A hiker travels 50 km in 2.5 hours 5. A biker travels 45 km in 5 hours B. Solve for the time taken to travel (Time = distance travelled + average speed 6. A motorcycle rider iraveis 150 km at 25 km/h. 7. A close van travels 288 km at 72 km/hr. 8. A jogger runs 20 km at 4km/hr. 9. A delivery truck travels 204 km at 68 km/hr. 10. A bird travels 210 km at 42 km/hr. C. Solve for the distance Distance = Average Speed x Time taken) 11. A racing motorbike travels at the speed of 122 km/hr for 1.5 hrs. 12. Mr. Garcia travels by car at 100 km/hs for 2 hours 13. A biker travels 45 km/hrs for 1.5 hrs. 14. Jianna runs 300 m/hrs for 2 hours 15. A carabao walking at a speed of 12 km/hr for 2 hours D. Circle the letter of the correct answer. 16. An airplane took 5 hours flying from point of origin to point of distination. If the total distance for flight 2000 kilometers, how fast was the plane travelled per hour? a. 400 km b. 300 km C. 250 km a. 200 km 17. A family went on an outing. They traveled for 3 hours at an average speed of 72 kilometers an hour. How far was their outing? a. 24 km b. 75 km c. 216 km d. 226km​

Mathematics
1 answer:
Aleksandr [31]2 years ago
3 0

Answer:

Step-by-step explanation:

1. 60                    11. 33  km

2. 500            12. 200 km

3. 5                       13. 67.5 km

4. 20                       14.  600 km

5. 9                   15. 30 km

                                          16. a.400 km

6. 2                                      17. c. 216 km

7. 4

8.5

9. 3

10.5

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Answer:

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If we let x = distance batter has run at time t and  D = distance from second base to the batter at  time t, then we know \frac{dx}{dt}=31 ft/s and we want \frac{dD}{dt} when he is halfway (at x = 45).

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D^2=90^2+(90-x)^2\\\text{Differentiating with respect to t}\\2D\frac{dD}{dt}=0+2(90-x)(-1)\frac{dx}{dt}\\2D\frac{dD}{dt}=-2(90-x)\frac{dx}{dt}

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