Answer:
The potential energy has a maximum when the ball is a time that is half of the time for total travel
Explanation:
Generally potential energy is a the varies directly with the height according to this formula

and the ball attains a maximum height when the time is equal to half of the total time taken to travel
The theory of impulse-momentum states that "t<span>he change in momentum of an object equals the impulse applied to it" meaning that the long barrel of the rifle covers a huge amount of motion of the bullet. The shot of the barrel is more accurate that way.
While work-energy theorem which states that "</span><span>the work done by all forces acting on a particle equals the change in the particle's kinetic energy" meaning that the discharge of the bullet caused by the barrel is slower but has more power than the one with the short barrel.</span>
Homogenous mixtures don't have visible constituents. An example of this would be water.
Heterogenous ones have visible constituents and an example would be if you put some dirt in water and then it wouldn't mix properly and you could see the dirt in it.
-70560, -9.8/2 = -4.9
120^2 = 14400.
Now you multiply 14400 * -4.9 = -70560m.
increaskng the impulse also <u>increases </u><u>momentum</u>