physics31

1.A man in a hot-air balloon drops an apple at a height of 150m. If the balloon is rising at 15 m/s, find the highest point reached by the apple.

  1. 👍 1
  2. 👎 0
  3. 👁 1,484
  1. The height is 150 + 15t - 4.9t^2

    The vertex of a parabola is achieved when x = -b/2a = 15/9.8 = 1.53 seconds

    so, at t=1.53 seconds, s = 161.48m

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. science

    when that air under the envelope is heated , the balloon lifts . which of the following statement is true A. hot air balloons use radiation to rise B. hot air balloons use conduction to rise C. hot air balloons use convection to

  2. Physics

    Hot air balloons float in the air because of the difference in density between cold and hot air. In this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. To do this,

  3. Pre-Calc

    A hot-air balloon is floating above a straight road. To estimate their height above the ground, the balloonists simultaneously measure the angle of depression to two consecutive mileposts on the road on the same side of the

  4. Science Halp

    1 When the air under the envelope is heated, the balloon lifts. Which of the following statements is true. a. Hot air balloons use radiation to rise b. Hot air balloons use conduction to rise c. Hot air balloons use convection to

  1. chem

    A hot air balloon is filled with 1.51 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 103 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the

  2. Physics, Math

    A typical volume of a modern hot air balloon is 2500 cubic metres, and a typical maximum temperature of the hot air is 120 degrees Celsius. Given these figures, and an outside air temperature and density of 15 ∘C and 1.225 kg/m3

  3. Physics

    A 5.00 x 102 kg hot air balloon takes off from rest at the surface of the earth. The buoyant force lifts the balloon straight up, performing 9.70 x 104 J of work on the balloon. At the instant the balloon's upward speed is 4.08

  4. Chemistry

    A hot air balloon is filled with 1.39 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 105 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the

  1. Physics

    A jetliner flies west 2,000 miles from Chicago you San Francisco. It has an average speed of 635 mph relative to the air. What is the velocity of the jetliner relative to the earth of the wind is blowing at 160 mph from the west

  2. Math(Revised)

    Phoebe and Tucker are 48m apart. Phoebe looks up at an angle of 43 degrees to see a hot air balloon hovering in the sky directly between her and Tucker. Tucker looks up at an angle of 31 degrees to see the hot air balloon. A.)

  3. Chemistry

    A hot air balloon is filled with 1.31 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 129 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the

  4. physics

    A hot-air balloon plus cargo has a mass of 1740 {\rm kg} and a volume of 12030 {\rm m^3}. The balloon is floating at a constant height of 6.25 {\rm m} above the ground. What is the density of the hot air in the balloon?

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