1 A footballer kicks a ball on horizontal ground giving it an initial velocity of 25 m s- 1 at an angle of 35° to the horizontal. a Where will the ball be 1.2 seconds after it is kicked? b What will be the greatest height reached by the ball? c Where will the ball land?

What is the measure of a change in an objects velocity?

How do the kidneys affect homeostasis

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.