physics

posted by .

A cannon is fired horizontally from a platform (see figure). The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.0 kg) has an acceleration of +2450 m/s2. At the same time, the cannon has an acceleration of -0.78 m/s2. What is the mass of the cannon?

  • physics -

    massshell*accelerationshell+massgun*accelerationgun=0

    Conservation is conserved, the total momentum before the firing was zero, so the momentum after the firing is zero.

    solve for the mass of the gun.

  • physics -

    thank you very much

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A revolutionary cannon, with a mass of 2000kg, fires a 20kg ball horizontally. The cannonball has a speed of 140m/s after it has left the barrel. The cannon carriage is on a flat platform and is free to roll horizontally. What is the …
  2. science

    a shell is fired from the cannon. the shell of mass 30kg is shot with an initial velocity of 30m/s. what is the momentum of the cannon just after the shell is shot ?
  3. Science

    A revolutionary war cannon, with a mass of 2170 kg, fires a 18.1 kg ball horizontally. The cannonball has a speed of 146 m/s after it has left the barrel. The cannon carriage is on a flat platform and is free to roll horizontally. …
  4. Physics

    7. A warship with a mass of 1.5x106 kg, fired a 75 kg shell from a gun with a 3.0 m long barrel in 0.05 seconds. a. What was the acceleration of the shell?
  5. physics

    A cannon shell is fired up in the air at an initial speed of 225m/s. After how much timeis the shell at a height of 6.20 X 102 and heading down. What equation would be used to solve this?
  6. physics

    A shell is fired from a gun with a muzzle velocity of 466m/s at an angle of 57.4 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment, whose speed immediately …
  7. physics

    The largest-caliber antiaircraft gun operated by the German air force during World War II was the 12.8 cm Flak 40. Suppose this weapon fired a 26.2 kg shell with a muzzle speed of 800 m/s. What propulsive force was necessary to attain …
  8. physics

    a shell of mass 0.020 kg is fired by a gun of mass 100kg.if the muzzle speed of the shell is 80m/s.what is the recoil speed of the gun
  9. physics

    A cannon is fired horizontally from a platform . The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.2 kg) has an acceleration …
  10. physics

    if a cannon shoots a 9-kg shell at 140 m/s straight up, what is the kinetic energy of the shell at the moment it is fired?

More Similar Questions