A roller coaster, shown in Fig. 6-38 (h1 = 30 m, h2 = 15 m, h3 = 25 m), is pulled up to point A where it and..

A roller coaster, (h1 = 30 m, h2 = 15 m, h3 = 25 m), is pulled up to point A where it and its screaming occupants are released from rest. Assuming no friction, calculate the speed at points B, C and D. h1= A is 30m above B. h2= B is 15m below D. h3= B is 25m below C. Help would be greatly appreciated. Thank you. If you have any questions on the view of the diagram please ask.

A roller coaster, shown in Fig. 6-38 (h1 = 30 m, h2 = 15 m, h3 = 25 m), is pulled up to point A where it and..
Without friction,

Va = 0+

Vb ≈ √(2)(9.80665)(30) ≈ 24 m/s

Vc ≈ √(2)(9.80665)(5) ≈ 9.9 m/s

Vd ≈ √(2)(9.80665)(15) ≈ 17 m/s
Reply:All the speeds can be computed from the formula

V = √(2gh) where h is the height below A



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