In order to get the most accurate mass measurement, you must __(blank)__. A. select the appropriate graduated cylinder and amount of water to measure the displacement

B. make sure that you have the right formula to measure its volume

C. calibrate your electronic balance properly so that it gives you a zero mark when empty

D. place one end of your measuring tape at the base of your object

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?