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At the highest point a roller coaster ha...

At the highest point a roller coaster has

A

only kinetic energy

B

only potential energy

C

both kinetic and potential energy

D

high average velocity

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Knowledge Check

  • The front of a roller-coaster car is at the bottom of a hill and is 15 feet above the ground. If the front of the roller-coaster car rises at a constant rate of 8 feet per second, which of the following equations gives the height h, in feet, of the front of the roller-coaster car s seconds after it starts up the hill?

    A
    h = 8s + 15
    B
    `h=15s+335/8`
    C
    `h=8s+335/15`
    D
    h = 15s + 8

  • A small roller coaster starts at point A with a speed u on a curved track as shown in the figure The friction between the roller coaster and the track is negligible and it always remains in contact with the track. The speed of roller coaster at point D on the track will be

    A
    `(u^2 + gh)^(1//2)`
    B
    `(u^2 + 2gh)^(1//2)`
    C
    `(u^2 + 4gh)^(1//2)`
    D
    u

  • The path traveled by a roller coaster is modeled by the equation y=27sin13x+30 where y is measured in meters. What is the number of meters in the maximum altitude of the roller coaster?

    A
    `13`
    B
    `27`
    C
    `30`
    D
    `57`

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