A base ball Gas a mass of about 0.2kg A, if the velocity of a ptched ball is 30m/s and after being
batted it is 50m/s in the opposite direction Find the
momentum of the ball and Impulse of the blow-
B. If the ball remains in contact with the bat for
0.002 sec. Find the average force of the blow​

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.