Question

How are uniform circular motion maps the same as linear motion maps? Check all that apply.

Time is represented by dots at 1-second intervals.
Start position is represented by an x.
Velocity vectors change length as the object’s speed changes.
Velocity vectors change direction as the object’s direction changes.
Acceleration vectors always point in the same direction.

Answer 1

Correct answers:
- Time is represented by dots at 1-second intervals.
- Start position is represented by an x.
- Velocity vectors change direction as the object’s direction changes.

Brief reasons:
- Motion maps (linear or circular) use equally spaced dots to show equal time intervals and commonly mark the start with an X.
- Velocity arrows show the direction of motion, so they rotate when the object’s direction changes (as in circular motion).
- (Not chosen) Velocity-vector length changes only if speed changes — in uniform circular motion speed is constant, so lengths stay constant.
- (Not chosen) Acceleration vectors do not always point the same way — in uniform circular motion acceleration points toward the circle center and thus changes direction as the object moves.