# Ball bouncing on inclined ramps

**1. The problem statement, all variables and given/known data**

We did a practical in which we bounced a ball from the same point onto an inclined ramp, from 10-50 degrees and measured the distance from where the ball was dropped and when it hit the table (i.e. place where it landed after it bounced off the ramp). I got these results:

(Note: I can only remember from 15-40 degrees, the distance travelled are estimates, as I can’t fully remember, but the trend is the same to what actually happened)

θ (angle of ramp to horizontal) (°) Distance travelled (cm)

15 43.2

20 48.2

25 52.4

30 51.7

35 46.7

40 40.2

**2. Relevant equations**

SUVAT equations?

**3. The attempt at a solution**

So now I need to explain the results, I was thinking that it is due to the component of the velocity, so Vcosθ, changes from 25-40, in such a way that cosθ decreases, therefore the horizontal range of the ball decreases. However I then found that cosθ from 15-40 all decreases, so surely the horizontal range of the ball should decrease. So, I am confused, is my thinking correct or am I missing something? (Maybe V, the speed when the ball hits the ramp is different when the ramp is inclined at different angles?).

Any help is appreciated! Thanks!

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