Anonymous
Anonymous asked in Science & MathematicsPhysics · 1 month ago

Physics: How did they calculate this answer?

For #7. I copied down the right answer but when I put the formula into my calculator I get something else. What am I doing wrong? Instead of 76,623m I keep getting 72,620m.

#7 ties into number 5 and 6. Can anybody help me please?

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2 Answers

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  • Anonymous
    1 month ago

    5)

    V = d/t = 384,000/(73*3.6) = 1461.2 m/sec

    6)

    1461.2 = a*ta

    acceleration time ta = 1461.2 / (9.8*1.5) = 99.40 sec

    7)

    d = V*t/2 = 1461.2*99.40/2 = 72,621 m (72.62 km)

    d = a/2*t^2 = (9.8*1.5)/2* 99.40^2 = 72,621 m (72.62 km)

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  • Anonymous
    1 month ago

    Another pic if it's less blurry.

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