Ahuman cannonball leaves the cannon with a speed 15 m/s the performer's mass is 80 kg. the cannon barrel is 9 m long. find the average net force

Need in all of themmm only answer if you know plsssss

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving