could u show work on how to do this? Please! Homework #1-Review of pi × cIC www.

Question

could u show work on how to do this? Please!

Homework #1-Review of pi × cIC www.webassign.net/web/Student/Assignment.Responses/subr for this class or purchased ocess ondine. The grace penod x mj o Show My Work (optional) Extra Credit for Physics 211G ONLY Find A B and A X B for the following vectors: (a) A 3i-6j. B 4 i+ 2j A B A XB k. (b) A = 5itsj, B-2i-aj A.B AX B k. + 4 j, B-4i-9 j (c) A = 9 A B AXB k. Show My Work (optional) o /5.88236 points t t = 5 s, an object moving on the x-axis at x = 3 m is traveling at 8 m/s i. At 13.5 m and its velocity is-1 m/s i. Find the average acceleration for this

Explanation / Answer

a. A = 3i - 6j
   B = -4i + 2j
   1. A.B = (3i - 6j).(-4i + 2j) = -12 - 12 = -24
   2. AxB = (3i - 6j)x(-4i + 2j) = 6k - 24k = -18k
b. A = 5i + 5j
   B = 2i - 4j
   1. A.B = (5i + 5j).(2i - 4j) = 10 - 20 = -10
   2. AxB = (5i + 5j)x(2i - 4j) = -20k - 10k = -30k
a. A = 9i + 4j
   B = 4i - 9j
   1. A.B = (9i + 4j).(4i - 9j) = 36 - 36 = 0
   2. AxB =(9i + 4j)x(4i - 9j)= -81k - 16k = -97 k

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