Question

what is the difference between speed and velocity?
a both speed and velocity include direction.
b velocity includes direction, but speed does not.
c speed includes direction, but velocity does not.
d velocity can be measured in miles per hour, but speed cannot.

Explanation:

Speed is a scalar quantity (only magnitude). Velocity is a vector quantity (magnitude + direction). Analyze each option:

• Option a: Incorrect. Speed doesn't include direction.
• Option b: Correct. Matches velocity (vector) - speed (scalar) difference.
• Option c: Incorrect. Reverses the properties.
• Option d: Incorrect. Both can use miles per hour (units for magnitude).

Answer:

B. Velocity includes direction, but speed does not.