Physics

When the dried up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.2 m/s at an angle of 60.0° above the horizontal.
If the seed pod is 0.8 m above the ground, how long does it take for the seed to land? (Neglect air resistance.)
What horizontal distance does it cover during its flight?

  1. 👍 0
  2. 👎 0
  3. 👁 584
asked by Blair
  1. Vo = 2.2m/s @ 60 deg.

    Vo(v) = 2.2sin60 = 1.91m/s.

    Vf^2 = Vo^2 + 2gd,
    d = (Vf^2-Vo^2) / 2a,
    d = (0-(1.91)^2 / -19.6 = 0.186m,up.

    Vf = Vo + gt,
    t = (Vf - Vo) / a,
    t = (0 - 1.91 / -9.8 = 0.195s,up.

    d = 0.8 + 0.186 = 0.986m above ground.

    d = Vo + 0.5gt^2 = 0.986m,
    0 + 0.5*9.8t^2 = 0.986,
    4.9t^2 = 0.986,
    t^2 = 0.20,
    t = 0.447s, down.

    T = t(up) + t(down) = 0.195 + 0.447 =
    0.64s to land.

    Vo(h) = 2.2cos60 = 1.1m/s.

    d(h) = 1.1m/s * 0.64s. = 0.704m = hor
    distance.

    1. 👍 0
    2. 👎 0
    posted by Henry

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    When the dried-up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.64 m/s at an angle of 30.0˚ below the horizontal. The seed pod is 0.465 m above the ground. How long does it take

    asked by MozAngeles on September 18, 2010
  2. Physics

    A seed shoots out from the pod with the speed of 2.4 m/s but with a direction of motion 30° below the horizontal. The seed pod is initially 1.2 m above the ground. (a) How long does it take for the seed to land? (Neglect air

    asked by Kaylah on October 14, 2011
  3. Biology

    Different types of plants may be angiosperms, vascular seed, vascular non-seed, or non-vascularplants 1) Short grass meadow----I def. know it's not an angiosperm but can it be vascular non-seed 2) Magwort---im debating if it's

    asked by Sarah on December 10, 2014
  4. Biology

    Assume you had a round seed garden pea plant and you wanted to find out whether the round seed plant was homozygous or heterozygous. What would you do? (Round is dominant to wrinkled seed)

    asked by Missy on April 6, 2015
  5. science review

    since tomorrow is my test. Please check: seed coat- skin covering the seed to protect the inner parts Hilum- ? cotyledon- where nutritient is stored inside the seed embryo- part of a seed that grows into a plant. it include roots,

    asked by Celest on May 17, 2012
  6. math

    A city plans to plant grass seed in a public playground that has the shape of a triangle with a height of H = 50 m and a base of B = 24 m. Each bag of grass seed will seed 120 m2. How many bags of seed should be purchased?

    asked by xx on October 10, 2016
  7. Botany

    Q: A difference between beans and corn during germination is a. the cotyledons are above ground in the bean plant b. the corn shoot is hooked to protect it from damage c. the bean plant cannot germinate until water penetrates the

    asked by Mesut on July 27, 2010
  8. Physics

    An i Pod draws about 3.7 volts (i Pod batteries are rated for 3.7 volts and 1200 mAhours.) Ignore the internal resistance of the battery. If the i Pod has a resistance of 12 ohms, what is the current through the i Pod?

    asked by DariaV on July 20, 2019
  9. Math

    Ken planted a mongo seed. He noticed that the seed grew 1/5 times larger than the previous week. This week he measured the plant and found out that it is 10cm tall. How tall will the plant be in two weeks from now?

    asked by Johnson on June 20, 2017
  10. biology

    1. What adaptive advantage did seeds provide -------------------------------------- Notes: Embryo is protected in a seed. The seed is modified for dispersal which is good b/c…. Once landed, the seed can remain dormant until…

    asked by mike on June 14, 2010

More Similar Questions