On your wedding day, you leave for the church 25 minutes before the ceremony is to begin. the church is 8 miles away. on the way, you have to make an unanticipated stop for construction work. as a result, your average speed for the first 15 minutes is only 7 miles per hour. what average speed in miles per hour do you need for the rest of the trip to get to the church in time

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?