A bullet with a mass of 0.040 kg collides inelastically with a wooden block of mass 1.5 kg, initially at rest. After the collision,
the bullet along with the block has a speed of 1.0 m/s.
Calculate the initial speed of the bullet.
a11.21 m/s
b 25.6 m/s
12.43 m/s
d 38.50 m/s

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

i already answered it by 34/s

there are no contact forces mentioned on the list of choices that you've provided.