Ask Question
1 March, 05:04

Two rockets having the same acceleration start from rest, but the first rocket travels for twice as much time as the second one. If rocket A goes for 310 km, how far will B go? If rocket A reaches a speed of 320, what speed will rocket B reach?

+3
Answers (1)
  1. 1 March, 06:30
    0
    Let ta be the time the first rocket travels and tb be the time the second rocket travels. ta = 2tb

    We apply:

    sa = ut + 1/2 at², with u = 0 since they start from rest.

    310000 = 1/2a (ta) ²

    a = 620000 / 4 (tb) ²

    sb = 1/2 a (tb) ²

    sb = 1/2 x 620000 / 4 (tb) ² x (tb) ²

    sb = 77.5 Km

    We apply v = u + at, with u = 0

    va = a (ta)

    a = 320/2 (tb)

    vb = a (tb)

    vb = (320/2tb) (tb)

    vb = 160
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Two rockets having the same acceleration start from rest, but the first rocket travels for twice as much time as the second one. If rocket ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers