physics

posted by .

A projectile is shot at an angle of 40.0 degrees with a velocity of 25.0 m/s. If a building is 50.0 m away, will this projectile strike the building, and if so, at what height?

  • physics -

    The time to reach the building, if it does not hit the ground first, is
    L/(Vo*cos40) = 50/(25 cos40) = 2.61 seconds

    The time to hit the ground, if it does not hit the building first, is
    2 Vo sin40/g = 3.28 s

    Therefore it hits the building (assuming it is tall enough so that the projectile can't go over the top).

    To find out where it hits, use the
    y vs t equation:
    y = Vo*sin40*t - (g/2)t^2
    and use t = 2.61 s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a projectile is fired from the top of a building with an initial velocity straight upward at 40m/sec. the top of the building is 50 meters above the ground?
  2. PHYSICS

    A Projectile IS FIRED FROM THE TOP OF A BUILDING WITH AN INITIAL VELOCITY STRAIGH UPWARD AT 40.0 M/SEC . THE TOP OF THE BUILDING IS 50.0 METERS ABOVE THE GROUND. A) THE MAXIMUN HEIGHT OF THE PROJECTILE ABOVE THE BUILDING. B) THE TIME …
  3. Physics

    A projectile is fired from ground level with a speed of 40 m/s at an angle of 30 degrees and hits a building 100m away. What is the time of flight of the projectile?
  4. physics

    a projectile is launched at a velocity of 125m/s at an angle of 20 degrees. A building is 200m away. At what height above the ground will the projectile strike the building?
  5. Physics

    A ball is shot from the top of a building with an initial velocity of 19m/s at an angle theta = 45 above the horizontal. Vxo and Vyo, are 13.4m/s If a nearby building is the same height and 50m away, how far below the top of the building …
  6. physics

    a projectile shot at an angle of 60 degrees above the horizontal strikes a building 80 ft away at a point 48 ft above the point of projection (a) find the velocity of projection. (b) find the magnitude and direction of the velocity …
  7. physic

    A ball is shot from the top of a building with an initial velocity of 16m/s at an angle θ = 43∘ above the horizontal. Part A What are the horizontal and vertical components of the initial velocity?
  8. math

    The height in meters of a projectile launched from the top of a building is given by h(t)=-5t^2+60t+15, where t is time in seconds since it was launched. a) How tall is the building?
  9. Physics

    A ball is shot from the top of a building with an initial velocity of 20 m/s at an angle θ = 39° above the horizontal. If a nearby building is the same height and 55 m away, how far below the top of the building will the ball strike …
  10. Physics

    A projectile is kicked horizontally off a tall building with an initial velocity of 13.7 m/s. The projectile lands 56.2 m away from the base of the building. How long is the projectile in the air?

More Similar Questions