Q: The cannons in the diagram below are being fired horizontally off platforms of the different heights(as indicated). While each cannon shoots an identical cannonball, they do so with differentvelocities. Given the height of the platform and each cannon's launch velocity, what is the correctranking, from greatest to least, for the range achieved by each cannonball? Please show your work

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

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.