What is the person doing on the position-time graph during Point A and Point C?
The person is moving upwards to a higher floor at both points.
The person is moving downwards to a lower floor at both points.
The person is moving upwards at Point A and downwards at Point C.
The person is resting or staying on the same floor at both points.
The person is resting or staying on the same floor at both points.
Which characteristic is constant for the car as it travels around the roundabout?
direction
position
speed
velocity
The characteristic that is constant for the car as it travels around the roundabout is its direction.
3.
Imagine two race cars driving at a constant speed of 225 mph. One is driving in a straight line, and the other is driving around a race track. Which car has a constant velocity? Which car has a changing velocity?
The car driving around the race track has a constant velocity, and the car driving in a straight line has a changing velocity.
Both cars have a changing velocity.
The car driving in a straight line has a constant velocity, and the car driving around the race track has a changing velocity.
Both cars have a constant velocity.