What is the cross product of #(2i -3j + 4k)# and #(- 5 i + 4 j - 5 k)#? Physics 2D Motion Introduction to Vectors 1 Answer GiĆ³ Dec 11, 2015 I found: #-i-10j-7k# Explanation: Calling the two vectors #vecu and vecv# we can use the definition of Cross Product to get: #vecuxxvecv=|(i,j,k),(u_x,u_y,u_z),(v_x,v_y,v_z)|=|(i,j,k),(2,-3,4),(-5,4,-5)|=# evaluating the Determinant: #vecuxxvecv==-i-10j-7k# Answer link Related questions Why is a vector product perpendicular? How can I draw velocity vector diagrams? Why are vectors important in physics? What is the study of motion forces and energy? What is the study of human motion? How can I construct vector diagrams? How should all vector diagrams be drawn? How does a vector quantity differ from a scalar quantity? How do you calculate the magnitude of vectors? How do vectors work in physics? See all questions in Introduction to Vectors Impact of this question 3571 views around the world You can reuse this answer Creative Commons License