Maths

Two missiles, 2420 km apart, are launched at the same time and are headed towards each other. They pass after 1.5 hours. The average speed of one missile is twice that of the other. What is the average speed of each missile?

  1. 👍 2
  2. 👎 1
  3. 👁 677
  1. If the slower's speed is s km/hr, then their combined speed of approach is s+2s = 3s

    So, since distance = speed * time,

    3s * 3/2 = 2420

    1. 👍 4
    2. 👎 2
  2. d1 + d2 = 2420.
    V1*T1 + V2*T2 = 2420.
    V2 = 2V1, T1 = T2 = 1.5 h.
    V1*1.5 + 2V1*1.5 = 2420, V1 = ?.

    V2 = 2V1.

    1. 👍 2
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A model rocket is launched straight upward. Its altitude y as a function of time is given by y=bt−ct2, where b = 80m/s , c = 4.9m/s2 , t is the time in seconds, and y is in meters. 1. Use differentiation to find a general

  2. Physics

    A cyclist maintains a constant velocity of 5.2 m/s headed away from point A. At some initial time, the cyclist is 251 m from point A. What will be his displacement from his starting position after 85 s? Answer in units of m What

  3. Algebra

    Help Please, ty A ball is launched at 20 meters per second (m/s) from a 60 meter tall platform. The equation for the object's height s at time t seconds after launch is s(t) = –4.9t2 + 20t + 60, where s is in meters. What is the

  4. physics

    A stone is launched straight up by a slingshot. Its initial speed is 20.1 m/s and the stone is 1.30 m above the ground when launched. Assume g = 9.80 m/s2. (a) How high above the ground does the stone rise? (b) How much time

  1. PHYSICS

    Two spheres are launched horizontally from a 1.1m -high table. Sphere A is launched with an initial speed of 5.0M/S . Sphere B is launched with an initial speed of 3.0M/S A. What is the time for the sphere A to hit the floor? and

  2. Differential Equations

    A projectile was launched from the ground with a certain initial velocity. Militaries used a radar to determine the vertical coordinate y(t) of the projectile for two moments of time t measured in seconds from the moment when the

  3. Physics

    An acrobat is launched from a cannon at an angle of 60 degrees above the horizontal. The acrobat is caught by a safety net mounted horizontally at the height from which he was initially launched. Suppose the acrobat is launched at

  4. algebra

    A plane leaves Chicago headed for LA at 540 mph. One hour later, a second plane leaves LA headed for Chicago at 660 mph. If the air route from Chicago to LA is 1800 miles, how long will it take for the first plane to pass the

  1. math

    A model rocket is launched straight upward. Its altitude y as a function of time is given by y = btct2 , where b = 82 m/s, c = 4.9 m/s2 is the time in seconds, and y is in meters. (a) Use differentiation to find a general

  2. Physics

    A "rocket car" is launched along a long straight track at t=0s. It moves with constant acceleration a1=3.0m/s^2. At t=2.5s, a second car is launched with constant acceleration a2=9.0m/s^2. 1. At what time does the second car catch

  3. Physics

    Two spheres are launched horizontally from a 1.0 -high table. Sphere is launched with an initial speed of 4.5 . Sphere is launched with an initial speed of 3.0 . What is the time for the sphere A to hit the floor? What is the time

  4. Physics

    A volleyball is sent over a net, having been launched at a speed 5 m/s at an angle 42.7 degrees above the horizontal, from the ground. What is the ball’s speed, in m/s, 2.97 seconds after being launched?

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