WAEC Physics 2011 Paper

Concept:The area enclosed under a velocity-time graph gives the total distance covered by the object.Explanation:On a velocity-time graph, the vertical axis is velocity ($v$) and the horizontal axis is time ($t$).The area under the graph between two time instants is calculated as:$$\text{Area} = \text{velocity} \times \text{time}$$Using the definition of velocity:$$\text{velocity} = \frac{\text{distance}}{\text{time}}$$So, multiplying velocity by time gives:$$\text{velocity} \times \text{time} = \text{distance}$$Therefore, the area under the velocity-time graph represents the distance covered by the body.Answer:B. distance covered