Answer:

Explanation:
= Velocity of one lump = 
= Velocity of the other lump = 
m = Mass of each lump = 
The collision is perfectly inelastic as the lumps stick to each other so we have the relation

The velocity of the stuck-together lump just after the collision is
.
The measurement of sound is in decibels.
Answer:
1.931 kilometres is the answer of 1.2 miles
Answer:
190v I believe
hope this helped a little and if it did pls mark brainiest :)