ROTATIONAL MOTION

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

• One uses cos, other uses sin
• Dot product yields scalar, cross product yields vector
• They are commutative
• One is for 2D, other for 3D

What is the angle between ω and r in rotational motion?

• 0 degrees
• 45 degrees
• 90 degrees
• 180 degrees

In the cross product, what happens to the result if both vectors are doubled?

• It doubles
• It remains same
• It becomes four times
• It halves

What is the magnitude of the angular velocity vector?

• Linear speed
• Radius
• Rate of change of angular displacement
• Mass times velocity

What is the result of î × (ĵ + k̂)?

• ĵ + k̂
• -ĵ + k̂
• ĵ - k̂
• 0