A hockey puck rebounds from a board as shown in Figure 16.(adsbygoogle = window.adsbygoogle || []).push({});

Figure 16 looks like this.

http://img174.imageshack.us/img174/2571/fig16vr6.png [Broken]

The puck is in contact with the board for 2.5ms. Determine the average acceleration of the puck over the interval.

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So I know you have to use vector components. The answer says the avg. acceleration is 7.3x10^3m/s^2 [7.5 N of W] (degrees).

How do I solve it? =/

I have made an attempt.

I found that the vector components for v1x and v2x to add up to 43.57, and the components of v1y and v1x to add up to (-1.87). However, I'm not getting the correct average acceleration value in the end.

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# Homework Help: Help with this physics problem (acceleration in two dimensions).

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