Answer:
P_2 = 1.62 atm
Explanation:
We know the formula for the rms speed of the ideal gas is given by
P= pressure of the surrounding
V= volume of the vessel
m= mass of the gas
Now, From this formula rms speed (v_rms) is directly proportional to square root is pressure.
Then
given that v_rsm,1= v0
and v_rsm,2=0.9v0
putting these values we get
P_2 = 1.62 atm
Explanation:
Mass of two soccer balls,
Initial speed of first ball,
Initial speed of second ball,
After the collision,
Final speed of the second ball,
(a) The momentum remains conserved. Using the conservation of momentum to find it as :
is the final speed of the first ball
(b) Let is the kinetic energy of the first ball before the collision. It is given by :
It is at rest, so, the kinetic energy of the first ball before the collision is 0.
(c) After the collision, the second ball comes to rest. So, the kinetic energy of the second ball after the collision is 0.
Hence, this is the required solution.