ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 437

Question 2181

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In the context of rotational motion, what does the position vector r connect?

Origin to particle
Axis of rotation to the particle
Center of mass to particle
One particle to another

Question 2182

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If a × b = c, what is the direction of c relative to a and b?

Parallel to a
Parallel to b
Perpendicular to the plane of a and b
At 45° to both

Question 2183

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What is the primary difference between dot product and cross product?

One uses sin, other uses cos
Dot product gives scalar, cross product gives vector
They are the same
Dot product is for 2D, cross for 3D

Question 2184

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Which of the following is true about the vector product?

It results in a scalar
It is commutative
It results in a vector
It is undefined for 3D vectors

Question 2185

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What is the result of the cross product of two perpendicular unit vectors?

Zero vector
A scalar
A unit vector perpendicular to both
A vector in the same plane