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

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 passing through the block.
b) Estimate the time required for the bullet to pass through the block.
c) If the block is not present, how long does the bullet take to travel the same distance?

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

  1. a)
    mass, m = 0.02 kg
    Distance, S = 10 cm = 0.01 m
    initial velocity, u = 500 m/s
    final velocity, v = 200 m/s
    Acceleration = (v²-u²)/2S m/s²

    b)
    v=u+at
    solve for t.

    c)
    Time to travel 10 cm without resistance,
    t0 = S/u

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    MathMate

  2. please help me to solve this question.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Nabeela

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    As shown in the figure below, a bullet is fired at and passes a piece of target paper suspended by a massless string. The bullet has a mass of m, a speed v before the collision with the target, and a speed (0.466)v after passing

  2. 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

  3. Physics

    A bullet of mass is fired horizontally with speed at a wooden block of mass resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest within the block,

  4. Physics

    A 3.5 g bullet is fired horizontally at 2 blocks resting on a smooth tabletop. The bullet passes trough the 1st block, with mass 1.2 kg and embed itself in the second with mass 1.8 kg. Speeds of 0.63 m/s and 1.4 m/s, respectively

  1. PHYSICS

    last homework question I cannot figure out.... H E L P :} a bullet is fired at and passes a piece of target paper suspended by a massless string. The bullet has a mass of m, a speed v before the collision with the target, and a

  2. 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 10.5 g, the mass

  3. 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

  4. Physics

    A bullet of mass 1.9×10−3 kg embeds itself in a wooden block with mass 0.987 kg, which then compresses a spring (k = 120 N/m) by a distance 3.5×10−2 m before coming to rest. The coefficient of kinetic friction between the

  1. 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

  2. physics

    here is my question: A bullet with a mass of 6.00 g is fired through a 1.25 kg block of wood on a frictionless surface. The initial speed of the bullet is 896 m/s, and the speed of the bullet after it exits the block is 435 m/s.

  3. PHYSICAL SCIENCE

    A bullet is fired at an angle of 30° above the horizontal with a velocity of 500m/s. a)find the range. b)Solve the time of itsflight. c)At what other qngle of elevation coyld this bullet be fired to give the same range as in(a).

  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.