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Engineering Β· Mechanical Engineering
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QUESTION THREE. [30 marks total] Answers in Question Three should be given in numerical vector form with units (ie, ΓΉ,-3.451m . s-1]). A 380g can of drink is thrown for the back row of a lecture theatre and hits someone in the head. The can is thrown at 30 degrees from the i-direction and has an initial speed of 8m s-1. The head is stationary immediately prior to impact and has a mass of 5kg. For ease of calculation use gravity of 10 [m s-2] 2.5m 3.5m

If the collision occurs with a direction defined 𝐞𝐍 = 𝐒, πžπ“ = 𝐣 and a coefficient of restitution of 0.9, determine the velocity of the head after impact.

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