Formula for distance is d=st
so for speed is s=d/t
48 km per hour
The two trains will collide pushing each other back slightly. The momentum will transfer from one train to another pushing each other back
Answer:
Part a)
U = 15.5 J
Part b)
h = 1.05 m
Part c)
v = 4.55 m/s
Explanation:
Part a)
Initial potential energy stored in the spring is given by

now we have

x = 20.0 cm
now from above formula we will have


Part b)
By mechanical energy conservation law we can say that initial spring potential energy stored = final gravitational potential energy at the top position



So maximum height from gun is 1.05 m
Part c)
For muzzle velocity of the ball we can use the energy conservation again
According to which the final kinetic energy of the ball = initial spring energy stored in it



Explanation:
The point is that water is moving smoothly but that the solutes are not.Even though the containers are chemically different (chemical disequilibrium), once all the solutes in one container are contrasted to all the solutes in another container, both have the same total solutes concentrations (this means that they are in osmotic balance).