physics!!

You are a secret agent and find that you have been pushed out of an airplane without a parachute. Fortunately, you are wearing a large overcoat (as secret agents often do). Thinking quickly, you are able to spread out and hold the overcoat so that you increase your overall area by a factor of two.

If your terminal velocity would be 45 m/s without the coat, what is your new terminal velocity with the coat?

  1. 👍
  2. 👎
  3. 👁
  1. The aerodynaminc drag force equals weight at the terminal velocity. Drag force is proportional to the square of the velocity, and the first power of the area. If area doubles, the velocity decreases by a factor of 1/sqrt2 = 0.707, to keep the drag force the same. The new terminal velocity is 45/sqrt2 = 31.8 m/s

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A 75.0kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 4.5m starting from the rest, its speed is 6.0m/s. Find the magnitude of the net force on the bobsled.

  2. physics

    The same type of engine is placed in two different airplanes. The first airplane is twice as heavy as the second airplane. Which statement is correct about the mass of the airplane and its acceleration, assuming a constant net

  3. trig

    An aifplane is flying on a compass heading (bearing) of 170* at 460 mph. A wind is blowing with the bearing 200* at 80mph. a) Find the component form of the velocity of the airplane. b) Find the actual ground speed and direction

  4. Algebra 2. Please Help Someone!!

    an airplane's altitude is 100 feet as it descents for a landing on a runway whose touchdown is 5000 ft away. Let the x-axis represent the ground and the y-axis represent the airplane's altitude. What is the slope of the airplane's

  1. chemistry

    In the following half equation, which is the oxidizing agent? NO3–(aq) + 4H+(aq) + 3e– NO(g) + 2H2O a. NO3– b. H+ c. e– d. NO e. H2O An oxidizing agent is a chemical compound that readily transfers oxygen atoms, or is a

  2. Chemistry

    7. 2Sr + O2  2SrO a) Determine what is oxidized and what is reduced b) Identify the oxidizing agent and the reducing agent 8. 2Cs + Br2  2CsBr a) Determine what is oxidized and what is reduced b) Identify the oxidizing agent

  3. chemistry

    In the reaction 2HNO3(aq) + Cu(s) + 2H+(aq) ¨ 2NO2(g) + Cu2+(g) + 2H2O(l) Which of the following statements is correct? A.HNO3 is the reducing agent, and Cu is the oxidizing agent B.HNO3 is the reducing agent, and H+ is the

  4. chem

    2H2(g)+ O2(g) --> 2H2O(L) I know the oxidizing agent is oxygen and the reducing agent is hydrogen. what are the number of electrons transferred in the balanced chemical equation? (I put 2 and tried -2 but it didn't seem right)

  1. Math

    An airplane has a speed of 400 km/h with no wind. The airplane flies 2140 km with the wind. The airplane can only fly 1860 km against the wind in the same time. If w equals the speed of the wind, make an equation that can be used

  2. Physics

    A woman in a car on a level road sees an airplane traveling in the same direction that is climbing at an angle of 30 degrees above the horizontal. By driving 110 km/h she is able to stay directly below the airplane. What is the

  3. Chem

    In the reaction 2HNO3(aq) + Cu(s) + 2H+(aq) �¨ 2NO2(g) + Cu2+(g) + 2H2O(l) Which of the following statements is correct? A.HNO3 is the reducing agent, and Cu is the oxidizing agent B.HNO3 is the reducing agent, and H+ is the

  4. Chemistry

    Choose and best oxidizing agent and the best reducing agent: Ni2+, Al, H+, and I- ??? I'm so confused, please help! I know the oxidizing agent is being reduced and the reducing agent is getting oxidized. But how do I use the

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