8) A vertical loop has a radius of 20.0 meters. a ) At what speed must the cart be travelling to experience a normal weight at the top of the loop?
b.) If this same speed is maintained throughout the loop, then what would their apparent weight be at
the boom of the loop ( g, 1 g, 2g, 2.5 g. etc.)

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?