Answer:
So the mass of the second object M will be 1.951 kg
Explanation:
We have given mass of the first object
and its velocity 
Mass of the second object
it is at rest so its velocity 
From conservation of momentum we know that
Initial momentum = final momentum
So 


M = 1.951 kg
Answer:
we would have no oxygen and barely any water.
Answer:
13.4s
Explanation:
t = usinx/g. (X= angle , u= initial velocity)
= (147×sin63)/9.8
=13.4