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? asked in Science & MathematicsPhysics · 8 years ago

Science speed/acceleration problem, please help? 10!!?

2. A ball rolls down an inclined plane with a constant acceleration of 2.5 m/s2:

a) how fast is the ball traveling after 3 seconds?

b) how far has the ball traveled in those 3 seconds?

c) how far has the ball traveled by the time its velocity is 15 m/s?

3 Answers

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  • odu83
    Lv 7
    8 years ago
    Favorite Answer

    v=2.5*3

    d=.5*2.5*9

    c) 15=2.5*t solve for t

    t=6

    d=.5*2.5*36

  • Anonymous
    8 years ago

    a) 2.5 m/s2 * 3 s = 7.5 m/s

    b) 7.5 m/s * 3 s = 22.5 m

    c) 15 m/s / 2.5 m/s = 6 s ; 15 m/s * 6 s = 90 m

  • ?
    Lv 4
    4 years ago

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