Physics

posted by .

Upon a flat only 10 m high (Is that possible?) there are two guns A and B attached together making a vertical angle of 60 degrees when A is flat on roof. They fire at the same time and has the same reloading time. Both guns are capable of giving an initial velocity of 5√3 to their bullets. If the 2nd bullet of A hits the 1st bullet of B in mid air, what's the reload time?

  • Physics -

    You have to figure where they hit. They ave the same horizontal distance, and same vertical final height at times separated by reload time.

    Vertical poistion:
    A) h=10-1/2 g (t-R)^2 where t is time in air of B, and R is reloadt time.
    B) h=10-5sqrt3sin60*t
    That t puts them at the same vertical height. So you have three unknowns, vertical height, t, and R. You have two equa;tions.
    Now considerhorizontal distance.
    A) d=5sqrt3*(t-R)
    B) d=5sqrt3*cos60*t
    set these two eqaul to get
    t-R=cos60t or 1.5t=R
    Now you have three equations, three unknowns.
    Have fun with the algebra. It should work out quickly.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    To reduce the loading from snow on the roof, a ski chalet design calls for the roof slope to be 36 degrees from vertical. If the width of the base is 14.0 m, what is the slant height of the roof?
  2. Physics

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 3.5 m away. After a running start, he leaps at an angle of 14 with respect to the flat roof while traveling at a speed of …
  3. Trig

    From a point 120 feet from the base of a plant building the angle of elevation to the roof line of the building is 38 degrees. The angle of elevation to the top of an antenna is 43 degrees. The antenna is attached to the nearest edge …
  4. trigonometry

    Two buildings with flat roofs are 60m apart. From the roof of the shorter building, 40m in height, the angle of elevation to the edge of the roof of the taller bldg. is 40°. How high is the taller bldg.?
  5. maths

    Seven guns all commence firing together at a target but they continue to fire at interval 2,3,5,7 and 12 minutes. After how many hours do all five guns fire at the same time as they did in the beginning?
  6. Math-SineLaw

    Fire lookout towers are used to locate fires so they can be put out as soon as possible. These towers often work in networks and if two towers can see a fire at the same time, they can determine the location of the fire vey accurately. …
  7. Physics

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 5.0 m away. After a running start, he leaps at an angle of 10◦ with respect to the flat roof while traveling at a speed …
  8. physics

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 4.4 m away. After a unning start, he leaps at an angle of 17◦ with respect to the flat roof while traveling at a speed of …
  9. Physics!!!!!!

    In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 5.0 m away. After a running start, he leaps at an angle of 10◦ with respect to the flat roof while traveling at a speed …
  10. Physics 11

    A student performs an experiment. On her desk, she directs a light ray at the flat surface of an unknown transparent material at an angle to the normal of 47 degrees. The light ray enters the material at an angle to the normal of 34 …

More Similar Questions