Question

a rocket is launched in the air. the graph below shows the height of the rocket h in meters after t seconds. how long is the rocket in the air?

Explanation:

Step1: Identify key - points on the graph

The rocket is in the air from the time it is launched ($h = 0$) until it lands ($h = 0$ again). The graph shows the rocket starts at $t = 0$ and lands at $t=28$ seconds.

Answer:

28 seconds