Wednesday
March 22, 2017

Post a New Question

Posted by on Monday, June 28, 2010 at 7:44pm.

a bullet of mass of 12 grams is fired into a large block of mass 1.5 kg suspended from light vertical wires. the bullet imbeds in the block and the whole system rises 10 cm. find the velocity of the bullet just before the collision.

  • physics - , Monday, June 28, 2010 at 9:04pm

    First find the momentum of the block and embedded bullet right after the collision from conservation of energy:
    (1/2) m v^2 = m g h
    note m cancels
    h = 10 cm = .1 meter
    solve above for v
    m = 1.5 + .012 kg
    now momentum before = momentum after
    .012 Vbullet + 0 Vmass = 1.512 v
    so
    Vbullet = (1.512 / .012) v

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question