Ask Question
29 April, 07:15

A girl and a puppy are 540 feet apart when they start running towards each other. The girl runs at a speed of 15 feet per second, and the puppy runs at a speed of 12 feet per second. How soon will they meet?

+3
Answers (2)
  1. 29 April, 08:13
    0
    20 secs

    Step-by-step explanation:

    The distance is 540 feet

    speed of the girl = 15ft/s

    speed of the puppy = 12 ft/s

    If we stand in the frame of reference where the girl is still, in this frame the speed of the puppy will be equal to the speed of the puppy in our previus frame plus the speed of the girl in the previous frame (because they are running in opposite directions)

    S = 15 ft/s + 12ft/s = 27ft/s

    Now we can use the equation:

    time = distance/speed

    T = 540ft/27ft/s = 20s
  2. 29 April, 09:06
    0
    Answer: 20 seconds

    Step-by-step explanation:

    The distance is 540 feet

    speed of the girl = 15ft/s

    speed of the puppy = 12 ft/s

    If we stand in the frame of reference where the girl is still, in this frame the speed of the puppy will be equal to the speed of the puppy in our previus frame plus the speed of the girl in the previous frame (because they are running in opposite directions)

    S = 15 ft/s + 12ft/s = 27ft/s

    Now we can use the equation:

    time = distance/speed

    T = 540ft/27ft/s = 20s
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A girl and a puppy are 540 feet apart when they start running towards each other. The girl runs at a speed of 15 feet per second, and the ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers