“Physics and Our Universe: How It All Works” S:1 E:10 Newton’s Laws in 2 and 3 Dimensions

S:1 E:10 Newton’s Laws in 2 and 3 Dimensions Consider Newton’s laws in cases of two and three dimensions. For example, how fast does a rollercoaster have to travel at the top of a loop to keep passengers from falling out? Is there a force pushing passengers up as the coaster reaches the top of its arc? The answer may surprise you.