Question

which of these quantities is a vector? (1 point)
○ momentum
○ distance
○ time
○ speed

Explanation:

To determine a vector quantity, we recall that vectors have both magnitude and direction, while scalars have only magnitude.

• Momentum: Defined as \(\vec{p} = m\vec{v}\) (mass times velocity), velocity is a vector, so momentum has both magnitude and direction (it's a vector).
• Distance: A scalar (only magnitude, no direction).
• Time: A scalar (only magnitude, no direction).
• Speed: A scalar (magnitude of velocity, no direction).

So momentum is the vector quantity.

Answer:

A. momentum