Indicate which of the motions below is linear and uniform?
The motion of the driver of a car who drives uniformly at 120 km/h on a straight section of the motorway.
The motion of a motorcyclist riding uniformly in a bend.
The motion of a Formula 1 racer who accelerates on a flat section of the racetrack.
The motion of a snowflake falling from the sky at a speed of 4 m/s.
The motion of a skier who rides a slalom between the gates.