Question

which of the following is true about speed and velocity? choose 1 answer: a when an object is moving straight it has speed, not velocity. when its turning it has velocity, not speed. b speed is how fast an object moves and velocity is how far it moves. c speed and velocity mean exactly the same thing. d speed doesnt include direction and velocity does include direction.

Explanation:

• Option A: Objects moving straight or turning have both speed and velocity (if moving), so A is wrong.
• Option B: Velocity is not "how far it moves" (that's distance), velocity is speed with direction, so B is wrong.
• Option C: Speed is scalar (no direction), velocity is vector (has direction), so they aren't the same, C is wrong.
• Option D: Speed is magnitude of motion, velocity is speed plus direction, so D correctly describes the difference.

Answer:

D. Speed doesn't include direction and velocity does include direction.