Physics

posted by .

A block of mass m 1 sits at rest on a table over a hole in the table. From below the table, a
bullet of mass m 2 is fired vertically upwards into the block. The bullet imbeds itself in the block.
The block and bullet rise to a maximum height h. What is the bullet’s initial speed? Answer in
terms of m 1, m 2, h, and g.

  • Physics -

    The law of conservation of linear momementum
    m1•v +0=(m1+m2) •u
    v=(m1+m2) •u/m1.
    The law of conservation of energy
    (m1+m2) •u²/2=(m1+m2) •g•h,
    u=sqrt(2•g•h).
    v=(m1+m2) •u/m1= (m1+m2) •sqrt(2•g•h)/ m1.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 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?
  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?
  3. physics

    suppose that a horizontal force of 0.7 n is required to pull a 5.0 kg block across the table at constant speed. what is the initial speed of a 20 g bullet, fired horizontally into the block, if the bullet imbeds in the initially stationary …
  4. physics

    A bullet of mass m = 5.89 g is fired into a block of mass M = 3.09 kg that is initially at rest on the edge of a smooth table. (The table top is 0.83 m above the floor.) The bullet ends up stuck in the block, and together they fly …
  5. physics

    A 3.50 g bullet is fired horizontally at two blocks at rest on a frictionless table. The bullet passes through block 1 (mass 1.16 kg) and embeds itself in block 2 (mass 1.85 kg). The blocks end up with speeds v1 = 0.560 m/s and v2 …
  6. physics!!

    An 8.82g bullet is fired into a 235g block that is initially at rest at the edge of a table of h = 1.05 m height (see the figure below). The bullet remains in the block, and after the impact the block lands d = 2.16 m from the bottom …
  7. physics

    An 8.82g bullet is fired into a 235g block that is initially at rest at the edge of a table of h = 1.05 m height (see the figure below). The bullet remains in the block, and after the impact the block lands d = 2.16 m from the bottom …
  8. college physics

    a bullet of mass 8g is fired into a block of mass 260g that is initially at rest at the edge of a table of height 1m the bullet remains in the block and after the impact the block land d=2.20m for the bottom of the table. determine …
  9. 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?
  10. physics

    In Figure (1), a 3.50 g bullet is fired horizontally at two blocks at rest on a frictionless table. The bullet passes through block 1 (mass 1.13 kg) and embeds itself in block 2 (mass 1.75 kg). The blocks end up with speeds v1 = 0.600 …

More Similar Questions