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Is moment scalar or vector and why?

Scalar has magnitude, but no direction.

Vector has magitude and direction.

Speed is a scalar. The car's speed is 25mi/hr. No direction is mentioned.

Velocity is a vector. The car is traveling 25 mi/hr 20º North of East. Velocity is a vector, because it has magnitude and direction

Moment has two meanings

Moment of inertia = ∑ Mass* raidus^2

This moment measures how difficult it is to rotate an object. This moment is a scalar.

Moment can also mean torque. Torque = Force x distance* sinθ (cross product). However torque can be clockwise or counter-clockwise. So torque is a vector.

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15y ago

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