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Math Help - Frictionless Plane

  1. #1
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    Frictionless Plane

    I got A, but was unable to determine b and c. Please help!

    A block is projected up a frictionless inclined plane with initial speed v0 = 4.46 m/s. The angle of incline is θ = 23.7. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
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  2. #2
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    Quote Originally Posted by BiGpO6790 View Post
    I got A, but was unable to determine b and c. Please help!

    A block is projected up a frictionless inclined plane with initial speed v0 = 4.46 m/s. The angle of incline is θ = 23.7. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
    b) You know or can easily get the following: displacement (s), final velocity (v), acceleration (a). Since this question is a uniform acceleration problem, there is a formula that links s, v, a and t. Use it to calculate t.

    c) You know or can easily get the following: displacement (s), initial velocity (u), acceleration (a). Since this question is a uniform acceleration problem, there is a formula that links s, u, a and v. Use it to calculate v. (You could also use conservation of energy since there's no friction. Or you could just use symmetry since there's no friction .....)
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