Ask questions and get helpful responses.
Ask a New Question
  1. Questions

physics

A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.21 kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.210. The bullet remains embedded in the block, which is observed to slide a distance 0.260 m along the surface before stopping. What was the initial speed of the bullet?

I know that all the kinetic energy is turned into potential energy but I know I also need to take momentum into account. so 1/2mv^2 = mgh?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
sandra

  1. The energy absorved by friction is 1.216*.230*9.8 J. That means that amount of energy must have been the initial KE of the block and bullet. From that, you can solve the initial Velocity of the block and bullet.
    conservation of momentum:
    momentumblock/bullet=initail momentum bullet
    1.216*V=.06*velocitybullet
    solve for velocity bullet

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A 2.50g bullet, traveling at a speed of 425m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 270g (a) find the speed of the bullet/block combination immediately after the collision (b) how high does

  2. Physics

    A bullet is fired into a block of wood with speed 250 m/s. The block is attached to a spring that has a spring of 200 N/m. The block embedded bullet compresses the spring a distance of 30.0 cm to the right. Determine the mass of

  3. physics

    as shown in the figure a bullet of mass 0.010 kg moving horizontally suddenly strikes a block of wood of mass 1.5 kg that is suspended as a pendulum. The bullet lodges in the wood, and together they swing upward a vertical

  4. Impulse and Momentum

    A bullet of mass m is fired at speed v0 into a wooden block of mass M. The bullet instantaneously comes to rest in the block. The block with the embedded bullet slides along a horizontal surface with a coefficient of kinetic

  1. physics

    A bullet of mass 12 g is fired horizontally into a fixed wooden block with a speed of 20m/s. The bullet is brought to rest in the block in 0.1 seconds by a costant resistance. Calculate the (i) magnitude of the resistance (ii)

  2. Physics

    A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but does not go through) it. After the impact, the block–bullet combination slides 6.5 m before coming to

  3. Physics

    A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 9.5 g, the mass of

  4. Physics

    A bullet of mass 0.02kg is fired at a speed of 500m/s towards a fixed wooden block of thickness 10cm. The bullet penetrates the block and emerges with a speed of 200m/s. a) Find the average retarding force on the bullet when it is

  1. Physics- so confused!!

    A bullet with a mass of 5.40 g is fired horizontally at two blocks resting on a smooth and frictionless table top as shown in the Figure. The bullet passes through the first 1.20 kg block, and embeds itself in a second 1.20 kg

  2. physics

    A 7 x 10^-3kg bullet is fired into a 2kg wooden block initially at rest on a level surface. The bullet passes through the block and emerges with the velocity of 200m/s. The block slides 0.5m and stops. If the coefficient of

  3. physics

    a bullet of mass 20 grams is fired horizontally into suspended stationally Worden block of mass 380 grams with velocity of 200 m/s.what is the common velocity of bullet and block if the bullet embedded into the block,if the block

  4. Physics

    A small wooden block with mass 0.800kg is suspended from the lower end of a light cord that is 1.52m long. The block is initially at rest. A bullet with mass 0.0126kg is fired at the block with a horizontal velocity v0. The bullet

Still need help? You can ask a new question.