A small mailbag is released from a helicopter that is descending steadily at 1.01 m/s.
(a) After 4.00 s, what is the speed of the mailbag?
v = m/s

(b) How far is it below the helicopter?
d = m

(c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.01 m/s?
v = m/s
d = m

  1. 👍 4
  2. 👎 0
  3. 👁 7,123
  1. (a) v=vₒ+gt = 1.01+9.8•4=40.21 m/s

    (b) the distance covered by mailbag (downward)
    s1= vₒt+gt²/2 =1.01•4+9.8•4²/2=82.44 m
    the distance covered by the helicopter (downward)
    s2=v•t =1.01•4= 4.04 m
    Δs=s1-s2= 82.44 – 4.04=78.4m
    (c) Upward motion of the mailbag
    h1=v²/2g =1.01²/2•9.8=0.053 m.
    This motion takes the time
    t1= vₒ/g=1.01/9.8 =0.1 s
    Free fall during
    t2=4-0.1 =3.9 s
    h2 = g•t ²/2 = 9.8•3.9²/2 =74 m
    Upward motion of the helicopter
    s2=v•t =1.01•4= 4.04 m
    Position of the mailbag
    74-0.053 =73.947 m


    1. 👍 4
    2. 👎 4
  2. What’s v and d equal then

    1. 👍 3
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    Hi I really need this question answer as a check: a helicopter holding a 70 kilogram package suspended from a rope 5.0 meters long accelerates upward at a rate of 5.2 m/s^2. a. Determine tension on the rope. b. When the upward

  2. math

    a photographer inside a helicopter which is descending vertically at 15m/s at an altitude of 55 meters accidentally dropped his camera. how long will it take the camera to reach the ground.

  3. Physics

    A helicopter is flying horizontally at a constant 40 m/s when it drops a package below. Where does it land? 1. About 50 m ahead of the helicopter 2. About 80 m behind the helicopter 3. There is no way to answer without knowing how

  4. Physics

    help. A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling horizontally at 40m/sec at a height of 100 m above the ground, where does the package strike the

  1. Physics

    A small first aid kit is dropped by a rock climber who is descending steadily at 1.3 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber? This problem seems like it should be easy,

  2. Physics

    (a) A small mail bag is released from a helicopter that is descending steadily at 2.13 m/s. After 4.38 s, what is the speed of the mail- bag? The acceleration of gravity is 9.8 m/s2 . (b) After the mailbag is dropped, the

  3. physics

    A package is dropped at time t=0 from a helicopter S that is descending steadily at a speed vi. (a) What is the speed of the package in terms of vi, g, and t? (b) What vertical distance d is it from the helicopter in terms of g

  4. Physics

    A simple pendulum is made from a 0.65m long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses

  1. Physics

    A 7900- helicopter accelerates upward at 0.90 while lifting a 1100- frame at a construction site. A) What is the lift force exerted by the air on the helicopter rotors? B)What is the tension in the cable (ignore its mass) that

  2. Geometry

    A helicopter pilot sights a landmark at an angle of depression of 22°. The altitude of the helicopter is 1450 feet. To the nearest foot, what is the horizontal distance from the helicopter to the landmark?

  3. Physics

    A helicopter above the ground is descending at 3.5 m/s. It drops a package from rest(relative to the helicopter). Just before it hits the ground the package is falling at a rate of 13.4 m/s relative to the ground. Find the

  4. physics

    The fastest helicopter, the Westland Lynx, can travel 3.33 km in the forward direction in just 30.0 sec. What is the average velocity of this helicopter in kilometers per hour?

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