Final answer:
The motion of a biker can be determined by analyzing the velocity-time graph. The slope of the graph indicates acceleration and the direction of motion.
Step-by-step explanation:
The motion of a biker as shown by the velocity-time graph in figure 1b can be determined by analyzing the graph. In the graph, the biker's velocity changes over time. The slope of the graph represents the acceleration of the biker. If the slope is positive, it indicates that the biker is accelerating in the positive direction. If the slope is negative, it indicates that the biker is decelerating or moving in the negative direction.
For example, if the graph shows a straight line with a positive slope, it means that the biker is accelerating at a constant rate in the positive direction. If the graph shows a curved line with an increasing slope, it means that the biker is accelerating at an increasing rate. Conversely, if the graph shows a curved line with a decreasing slope, it means that the biker is decelerating or slowing down.
By analyzing the velocity-time graph, we can understand how the biker's motion is changing over time and determine important aspects such as acceleration and direction of motion.