science

a bullet is fired with velocity 55m/sec at a target.if if the sound of collision heard after 7second.find the distance between target and gun.(speed of sound in air=330m/sec

  1. 👍 1
  2. 👎 0
  3. 👁 655
  1. 7 seconds?

    1. 👍 0
    2. 👎 0
  2. Call the time, which I think is a typo, T
    distance is d

    t1 = time out
    t2 = time back

    t1 + t2 = T
    t1 = d/55
    t2 = d/330
    so
    d/55 + d/330 = T
    d = T /(1/55 + 1/330)

    1. 👍 0
    2. 👎 0
  3. If the distance is x meters, then since time = distance/speed,

    x/55 + x/330 = 7
    x = 330m

    Now, the problem is that the bullet will drop 176m in the 6 seconds spent in the air.

    So, now we have to include the angle of the trajectory, which complicates matters some.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics!

    A torpedo fired from a submerged submarine is propelled through the water with a speed of 20.00 m/s and explodes upon impact with a target 2000.0m away. If the sound of the impact is heard 101.4s after the torpedo was fired, what

  2. Physics

    A pistol is fired horizontally toward a target 120 m away but at the same height. The bullet's velocity is 200 m/s. How long does it take the bullet to get to the target? How far below the target does the bullet hit? please

  3. Physics

    A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, the acceleration of the bullets just before they

  4. physics

    0.30 sec after seeing a puff of smoke rise from the starter's pistol the sound of the firing of the pistol is heard 100.0 m away. what is the velocity of the sound in m/s and in km/h?

  1. physics

    a bullet is fired at 660 m/s and strikes a target 200 meters away. what is the duration of the bullet?

  2. physics

    a gun is fired from a distance of 1.2 km from a hill.the echo of the sound is heard after 7.1 seconds at the same place. Calculate the velocity of sound.

  3. physics

    A rifle with a mass of 0.9 fires a bullet with a mass of 6.0 g (0.006 kg). The bullet moves with a muzzle velocity of 750 m/s after the rifle is fired. A. What is the momentum of the bullet after the rifle is fired? B. If external

  4. Physics

    A Rifle Is Aimed Horizontally At A Target 30m Away. The Bullet Hits The Target 1.9cm Below The Aiming Point. (A) What Is The Bullet's Time Of Flight? (B) What Is The Muzzle Velocity?

  1. physics

    suppose you fire a bullet speed 1600 m/s in a shooting gallery and hear the gong on the target ring .731s later taking the speed of sound to be 330m/s and assuming the bullet travels straight downrange at a constant speed, how far

  2. AP Physics

    A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of

  3. Physics

    A bullet of mass 10 g hits a target and penetrated 2 cm in to it if the average resistance offered by target is 100 N then the velocity with which the bullet hits the target is ?

  4. Physics

    A 0.03-kg bullet is fired vertically at 200m/s into a 0.15-kg baseball that is initially at rest. The bullet lodges in the baseball and, after the collision, the baseball/bullet rise to a height of 37m. (a). What was the speed of

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