Vs - velocity on beginning
ve - velocity on ending. You've got:

So he needed 4 second.
F = ma
We have mass = 0.2kg
and acceleration = 20 m/s^2
So..
F = (0.2)(20)
F = 4 N
Answer:
D) intermolecular attraction deceased
Answer:
The force is 
Explanation:
From the question we are told that
The diameter of the wire is 
The pressure is 
Generally the radius of the of the wire is

=>
=> 
The Area is evaluated as

=> 
=> 
Generally pressure is mathematically represented as

=> 
=> 
=> 
The answer is reverse faults.