ROTATIONAL MOTION

Which of the following represents the correct determinant form for the cross product of two vectors?

• î(axbx) + ĵ(ayby) + k̂(azbz)
• î(aybz + azby) + ĵ(axbz + azbx) + k̂(axby + aybx)
• î(aybz - azby) - ĵ(axbz - azbx) + k̂(axby - aybx)
• î(ax + bx) + ĵ(ay + by) + k̂(az + bz)

What determines the direction of the vector resulting from a cross product?

• Left-hand rule
• Magnitude of the vectors
• Right-hand screw rule
• Angle between vectors

In the expression a × b, if a and b are interchanged, what happens to the result?

• It remains the same
• It becomes zero
• It changes sign
• It doubles

What is the result of î × k̂?

• ĵ
• -ĵ
• î
• k̂

What is the value of k̂ × î?

• -ĵ
• î
• ĵ
• k̂