Answer:
Amount of linear movement
Explanation:
Our system is defined by the rate of change in mass that
leaves the car 
, this happens during a time interval
![[t, t + \Delta t]](https://tex.z-dn.net/?f=%5Bt%2C%20t%20%2B%20%5CDelta%20t%5D)
, in addition to freight car and sand at time t.
In this way we need to define the two states:
State 1,
consider 
and V.
State 2,
consider 
In this state is the mass of sand output, which
is composed of
In this way we define the Linear movement in x, like this:
In this way we proceed to obtain the Force
Since the mass of the second term becomes 0, the same term is eliminated, thus,
There are 12 blue marbles, because this can basically be modeled as 3/2 = 18/x, which can be solved by mutiplying 3 and 2 by 6
The answer is 2.49 x 10^5 KJ. This was obtained (1) use the formula for specific heat to achieve Q or heat then (2) get the energy to melt the copper lastly (3) Subtract both work and the total energy required to completely melt the copper bar is achieved.
Answer:
This reduces the average force applied during the landing process/ or you can say it reduces the impact your body takes.
Explanation:
