Inclined Plane and soccer ball

  • Thread starter luckii
  • Start date
  • #1
3
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i think this is an easy question but i forgot how and the book doesn't want to tell me. can anyone tell me how to figure this out? thanks.

A soccer ball is released from the top of a smooth incline. After 4.58 s the ball travels 10.8 m. One second later it has reached the bottom of the incline.

(question 1)Assume the ball's acceleration is constant and determine its value ( m/s2).

(question 2)How long is the incline?
 

Answers and Replies

  • #2
Chi Meson
Science Advisor
Homework Helper
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1)
what's the initial velocity?

how much time has elapsed?

what is the displacement of the ball?

That's three things you know. What formula relates these three things along with acceleration?
 
  • #3
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thats the only information included in the question.
 
  • #4
14
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luckii, if that didn't help you, try with
[tex]
s = \frac{1}{2} a t^2
[/tex]

then you should be fine with both questions...
good luck :)
 
  • #5
Chi Meson
Science Advisor
Homework Helper
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luckii said:
thats the only information included in the question.
Yes, and I'm trying to get you to notice that the question gives you initial velocity (zero), time (4.58 s) and displacement (10.8 m).
 

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