marry Lou is running errands for her mother. She leaves her house and goes 1 mile north to the bakery she then goes 2.5 miles south to get her hair cut she countiues south 1.5 miles to check out a book from the library she then goes 0.75 miles north to meet a friend. This entire voyage lasts 3 hours what is the toatal displacement

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?