Question

USUDI Neupane S 2425 - Spring 20-OSEI-YIADOM > Activities and Due Dates > HW: Momentum Impulse and Collisions Assignment Score: 32.7% Resources CX Give Up? Feedback Resume Question 1 of 12 > Attempt 3 Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skateboard, would collide with some object. In this way, he got a gut feel for the physical properties of collisions and succeeded in combining his two passions. On one occasion, the Skate, with a mass of 111 kg, including his armor, hurled himself against a 821 kg stationary statue of Isaac Newton in a perfectly elastic linear collision. As a result, Isaac started moving at 1.25 m/s and Nate bounced backward. What were Nate's speeds immediately before and after the collision? (Enter positive numbers). Ignore friction with the ground. speed before: 4.93 m/s speed after: -4.31 m/s "By the way, this brief bio of Nate the Skate is written in the past tense, because not long ago he forgot to put on his careers ontvacy policy terms of ur contact us help o e I WB © 40 ENG 11:02 PM 31/3/2020

Answer 1

au, o U₂ =0 ₂ @ ① mi mi m me After Before linear momentum conservation : m,ง - กาง, + mv, u; = v,+ 821 V₂ TUT S Scanned with = Vi + 9.245 CamScanner (V2 = 1.25 mis)

* kinetic energy conservation > hm, u,2 = 1 m, v2 + / m2 V2² U? = yet 7.396*1.25? (Vi+9.245)2 = Vid + 11.5563 (: V=V+9.345) +11.5563 VA + Qx9.245 V, + (9.245)2 = y -73.9137 9 9.245 Scanned with CamScanner = -3.9974 Iv=-3.997 mis ?

using, U, V, + 9.245 = -3.997 + 9.245 = 5.247 U,= S.247 mis ) Speed before, u, = 5.247 mis Speed after. Vi=-3.997 mis Scanned with CamScanner
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