Question

which of the following statements are true about speed and velocity? choose 2 answers: 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 doesnt include direction and velocity does include direction. d speed and velocity both tell you how fast an object is moving.

Explanation:

• Option A: Incorrect. Both straight - line and turning motion have speed and velocity (velocity is speed with direction, so any moving object has speed, and if direction is considered, has velocity).
• Option B: Incorrect. Velocity is not about how far an object moves (distance is about how far), velocity is speed with direction.
• Option C: Correct. Speed is a scalar quantity (magnitude only, no direction), velocity is a vector quantity (magnitude and direction).
• Option D: Correct. Speed (magnitude of how fast) and velocity (magnitude - which is speed - with direction) both give information about how fast an object is moving (the magnitude part for velocity).

Answer:

C. Speed doesn't include direction and velocity does include direction.
D. Speed and velocity both tell you how fast an object is moving.