Bigger change in velocity because the object is lighter than the object with more mass so it would move further (sorry it’s not a great explanation)
Answer:
a. 
b. Δ
c. 
Explanation:
a).
Momentum conserved





b).
Δ


Δ
c).


d).
All of which has been lost as mechanical energy, and is now thermal energy warmer football players, noise a loud crunch for example.
Answer and Explanation:
We have given the expression
Dimension of 
Dimension of R which is gas constant
Dimension of temperature T 
And dimension of pressure 
Now combine dimension of

So the dimension of
and dimension P is same so there unit will also be same
From ideal gas equation we know that 

As the both P and
has same dimension so they are dimensionally constant
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