Answer:
it started to move a 1 second
The question just basically explained what happens
Should be 1.4, I hope this helps you out
A solid, liquid, or gas or plasma. Which I think it is. Check though.
The change in momentum is 240 kgm/s
<u>Explanation:</u>
Given:
Force, F = 120N
Time, dt = 2 sec
Change in momentum, dP = ?
We know,

On substituting the value we get:

Therefore, change in momentum is 240 kgm/s