- #1
Gallium
- 8
- 0
I forget how to solve one dimensional motion problems with friction, which is holding me up in this problem:
a 5.00 g bullet is fired horizontally into a 1.2 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and surface is .2. The bullet remains embedded in the block and the block moves 0.23 m before stopping. What is the initial speed of the bullet?
bullet------->block----.230 M-[ ]
looking at it as a momentum problem:
M(bullet)*V(bullet) = M(Bullet+Block)*V(bullet+block)
you need to solve for v(bullet+block) which can be determined by the following problem:
A block of mass 1.25 kg on a surface with kinetic friction of .2 is acted on upon a force and move .230 M before coming to rest on a horizontal surface. Find the initial speed of the bullet.
m = 1.25
v_0 = x
v_x = 0
mu_k = .2
a 5.00 g bullet is fired horizontally into a 1.2 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and surface is .2. The bullet remains embedded in the block and the block moves 0.23 m before stopping. What is the initial speed of the bullet?
bullet------->block----.230 M-[ ]
looking at it as a momentum problem:
M(bullet)*V(bullet) = M(Bullet+Block)*V(bullet+block)
you need to solve for v(bullet+block) which can be determined by the following problem:
A block of mass 1.25 kg on a surface with kinetic friction of .2 is acted on upon a force and move .230 M before coming to rest on a horizontal surface. Find the initial speed of the bullet.
m = 1.25
v_0 = x
v_x = 0
mu_k = .2