Answer:
Explanation:
Given
mass of tree stump is 
mass bullet is 
velocity of bullet is 
Conserving momentum for bullet and tree stump
Initial Momentum 
Suppose
is the velocity of the system
Final Momentum 
Initial momentum =Final Momentum


C i would think
it sounds best
Answer: The electromagnetic waves reach Earth, while the mechanical waves do not.
Explanation:
Answer:
an elastic wave in the earth produced by an earthquake or other means
Explanation: