Question

an athlete throws a javelin from a height of 2 meters. the javelin reaches a total height of 7 meters, after covering a distance of 23 meters. the total distance covered by the javelin is 50 meters. which of the following graphs represents the trajectory of the javelin?

Explanation:

Step1: Identify starting height

The javelin is thrown from a height of 2 meters, so the graph should start at the point (0, 2) on the height - distance graph. All the given graphs start at (0, 2).

Step2: Identify maximum - height and its distance

The javelin reaches a total height of 7 meters after covering a distance of 23 meters. We need to check the maximum - height and its corresponding horizontal distance on each graph.

Step3: Identify total horizontal distance

The total distance covered by the javelin is 50 meters. So the graph should end at a horizontal distance of 50 meters.

For graph W: The maximum height is around 8 meters which is incorrect.
For graph X: The maximum height is around 6 meters which is incorrect.
For graph Y: The maximum height is around 7 meters and it occurs at approximately 23 meters horizontally, and the graph ends at 50 meters horizontally.
For graph Z: The maximum height is around 6 meters which is incorrect.

Answer:

Y.