the speed of the bullet before it hit the block

Related BrainMass Solutions

• bullet hitting a wooden block

  First we need to velocity of the block at the instant after the bullet passes through it using the conservation of momentum: mv_1=mv_2+Mv Where v1 and v2 are the velocities of the bullet before and after it hit the bullet, respectively v is the velocity

• Momentum & Collisions (rifle bullet)

  We know that when the spring is compressed D=0.25cm with a force of F=0.75N Hence: To find the block's velocity after the bullet hit: To find the initial speed vi of the bullet of mass μ we use conservation of momentum

• Physics - Work-Energy Theorem

  The kinetic energy of the bullet when it hits the block = (1/2)mv^2 = (1/2)(0.010)(400^2) = 800 J.

• Physics: Momentum and Speed

  (a) What is the change in momentum of the bullet if it is embedded in the block? (b) What is the change in momentum of the bullet if it ricochets in the opposite direction with a speed of 99 m/s?

• Bullet Motion and Conservation of Energy

  of the bullet just before it hit the block.

• Work-Energy Concepts

  Let v be the initial speed of the bullet Then, Kinetic Energy of the bullet = ½mv^2 = ½*0.005v^2 = 0.0025v^2 J Since the block was at rest initially on a horizontal level, energy of the block = 0 Therefore, total energy before impact = 0.0025v

• Momentum conservation when a bullet passes through and emerges from a block.

  Find the speed of the wood block after the bullet emerges. The conservation of momentum requires that the intial momentum of the bullet before impact must equal the momentum of the emerging bullet plus the momentum of the moving block.
  Step 1.

• Speed of a bullet measured using ballistic pendulum !

  The block is suspended from cables of length, l, and the impact of the bullet causes it to swing through a maximum angle, A. The initial speed of the bullet is v. a) How fast is the block moving immediately after the bullet comes to rest?

• 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 friction u.