Plzzz helppp A red ball is thrown straight down from the edge of a tall cliff with a speed of 30 m/s. At the same
time a green ball is thrown straight up with the same speed. If the green ball travels up, stops, and
then drops to the bottom of the cliff, how many seconds later than the red ball will it land?

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)