while hiking julia kicked a small rock off a ledge that was meters above a crevasse use geogebra to graph the situation using the forula y=-4.9t^2+9 use the graph to determine when the rock will hit the bottom of the crevasse 2 meters below ground level roundyour answer to the nearest tenth of a second
hw many seconds will it take for the rock to hit the bottom of the crevasse
To graph the situation using Geogebra with the formula y = -4.9t^2 + 9, follow these steps:
1. Open Geogebra on your computer or device.
2. Click on the "Graphics" tab on the left sidebar.
3. Enter the equation y = -4.9x^2 + 9 in the input box at the top of the screen.
4. Press Enter or click on the checkmark icon to graph the equation.
5. Adjust the axes and scales as needed to clearly see the graph.
6. The graph should show a downward-opening parabola representing the path of the rock.
To determine when the rock will hit the bottom of the crevasse 2 meters below ground level, you need to find the value of t when y = -2 (since the crevasse is 2 meters below ground level).
-4.9t^2 + 9 = -2
-4.9t^2 = -11
t^2 = 11 / 4.9
t ≈ √(2.24) or t ≈ 1.5 seconds
Therefore, it will take approximately 1.5 seconds for the rock to hit the bottom of the crevasse 2 meters below ground level.