Physics

The Flower Pot: A flower pot falls off a windowsill and falls past the window below. It takes .3 s to travel from the top of the window to the bottom of the window which is 2.2 m tall. From what height above the top of the window did the flower pot fall?

  1. 👍
  2. 👎
  3. 👁
  1. Write equations for the times (t1 and t2) that it takes to pass the top and the bottom of the window, in terms of the unknown distance h.

    t1 = sqrt(2h/g)
    t2 = sqrt[2(h+2.2)/g]

    Then, using those equations, write an equation for the time it takes to go from top to bottom of the window (which you know = 0.3s), in terms of the unknown h.

    t2 - t1 = 0.3
    = sqrt[2(h+2.2)/g] - sqrt(2h/g)

    Solve for h.

    1. 👍
    2. 👎
  2. h=ut +1/2at^2.
    2.2=u*.3+1/2*10*(.3)^2
    therefore,u=2.2-0.45/.3=5.8.
    Taking 'u'=0 and v=5.8m/s.using the equation v^2=u^2+2as,we can caculate 's'=v^2/2a=1.682m.

    1. 👍
    2. 👎
  3. all wrong answers

    1. 👍
    2. 👎
  4. In order to find the distance between the the bottom of the window above which is where the flowerpot was dropped(window 1) to the top of the window below (window 2) we need to find the velocity of the flowerpot as it passes the top of the window. Later this will serve as our "V-final." We know three things which is all you need to solve kinematic equations. 1) the distance the flowerpot travels = 2.2. 2) The time it took for the pot to travel 2.2 m= 0.3 seconds. 3) since this is a free fall problem acceleration and the flower pot is falling in the Y-direction ay = +9.8

    we use this to solve for Voy at the top of the window 2
    y=y0 + V0yt * 1/2ayt^2
    Isolate Voy:
    V0y= Dy/t - 1/2ayt
    V0y=2.2/0.3 - 1/2*9.8*o.3 = 5.86 m/s

    now that you have your V-initial, V0: solve for the distance between window 1 and window 2. We know three things: 1) since the flowerpot appears to have started from rest the initial velocity is zero and the initial velocity you just found becomes your finally velocity since you are finding the distance from the bottom of window one to the top of window two. 2) free fall problem = acceleration = 9.8, 3) final velocity = 5.86 m/s

    now use kinematic equation to solve for distance delta-y or "Dy"

    Vf^2 = V0^2 + 2*ay*Dy

    Dy = (Vf^2 - V0^2)/ 2*ay

    Dy = (5.86^2 - 0)/ 2 * 9.8 = 1.75 m

    Vf is final velocity
    V0 is initial velocity
    Dy or Delta Y refers to the change in y or displacement. Change is y is similar to change in X. they are both displacement vectors but along a different axis or direction which is why it is very important to know the difference when your solving a physics problem. is the displacement occuring in the X- or Y- direction?

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Becky made 4 quarts of chicken noodle soup in a big pot, then served Test Image-cup bowls of soup to 6 people. How much soup is left in the pot? (1 qt = 4 c)

  2. Science

    Explain how each of the flower parts (petals,pistil, stamen, stigma, ovule, ovary, filament, anther,style) work in reproducing the flower. My answer: The petals are there to attract pollinators. A pollinator, like a bee, goes to a

  3. math

    The boundary of a park is shaped like a circle. The park has a rectangular playground in the center and 2 square flower beds, one on each side of the playground. The length of the playground is l and its width is w. The length of

  4. maths

    Here are two pots. Diagram: Pot A- Height: 8cm Pot B- Height: 10cm Pot A and pot B are MATHEMATICALLY SIMILAR. The area of the base of pot B is 160cm2. Work out the area of the base f Pot A. My work: 1)Labelled POt B diagram as

  1. Math

    A store owner bought some flower pots for $1,200.the flower pots were sold for $2,700,with a profit of $30 per pot.how many flower pots did she sell?

  2. bussiness math

    Angela Hatcher is planting flower bulbs in her garden for this coming summer. She intends to plant 1 bulb for every 5 square inches of flower bed. How many flower bulbs will she need for an area measuring 230 square inches?

  3. Physics

    A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, which is copper and rests on a heating element. In two minutes, the mass of water boiled away is m = 2.5 kg. The

  4. physical science

    A flower pot falls off a window ledge 10.0 m above the ground. Its velocity as it hits the ground is

  1. physical science

    a flower pot is dropped out a twentieth story window. how fast will it be moving after 7 seconds? how much is the acceleration 3 seconds after it falls?

  2. operation managment

    Garden Variety Flower shop uses 625 clay pots a month. The pots are purchased at $2 each. Annual carrying costs per pot are estimated to be 15 percent of cost, and ordering costs are $125 per order. The manager has been using an

  3. math

    Two cups, two plates, and a pot cost $10.20 at a garage sale. A cup costs twice as much as a plate. The pot costs $3 more than a cup. What is the price of the pot? Explain how you got your answer.

  4. calculus

    an open topped cylingrical pot is to have a volume of 125 cm^3. determine the minimal possible amount of material used in making this pot.( neglect the thickness of the material as well as possible waste)

You can view more similar questions or ask a new question.