algebra

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polynomial
with h+vt-4.9^2
50 meters high
30 meters per sec.
what is height after 2 sec.

  • algebra -

    Plug the values in.
    h = 50m
    t = 2s
    v = 30m/s

    h+vt+4.9*t^2=?

  • algebra -

    h+vt-4.9 t^2 (typo)
    from
    h = Ho + Vo t + (1/2) a t^2
    where a = gravity = 9.8 m/s^2

    Ho, initial height = 50m
    Vo = initial velocity up = 30
    so
    50 + 30 (2) - 4.9 (4)
    = 110 - about 20 = about 90
    you use your calculator

  • algebra typo -

    typo a = -9.8m/s^2
    (down)

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