If an object is projected horizontally from a height of 5 m with an initial velocity of 7 m/s, what is the value of x0? A. x0=−9.8 m/s2

B. x0=5

C. x0=0

D. x0=7

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

A6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400kg moving at -3.0m/s. what is their final velocity? +0.50 m/s -1.0 m/s +2.5 m/s -0.25 m/s

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.