A roller coaster car has a mass of 900 kg and is traveling through a vertical loop of radius 60 m. What is the minimum speed to just maintain contact with the track at the inside of the top of the loop?

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf