9- A bowling ball of mass 7.5 kg travelling at 10 m sec rolls off a horizontal table 1 m high. (Assume the acceleration due to gravity is 10 m sec, and the effects of air resistance may be ignored unless otherwise stated.) a Calculate the ball's horizontal velocity just as it strikes the floor. b What is the vertical velocity of the ball as it strikes the floor? c Calculate the velocity of the ball as it reaches the floor. d What time interval has elapsed between the balI leaving the table and striking the floor? e Calculate the horizontal distance travelled by the ball as it falls.

A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated. If the density of air is 1.16 kg/m³ at the inlet and 1.05 kg/m³ at the exit, determine the percent increase in the velocity of air as it flows through the hair dryer. 1.05 kg/m³ The increase in velocity is Pin kg/m³ 9.52 %.

! Required information A manometer is used to measure the air pressure in a tank. The fluid used has a specific gravity of 1.40, and the differential height between the two arms of the manometer is 19.8 in. The local atmospheric pressure is 12.7 psia. The specific gravity of the fluid is given to be 1.40. The density of water at 32°F is 62.4 lbm/ft³. Determine the absolute pressure in the tank for the case of the manometer arm with the higher fluid level being attached to the tank. The absolute pressure in the tank is psia.