Answer:
The cliff drivers must leave the top of the cliff at 2.21 m/s
Step-by-step explanation:
Horizontal Motion
When an object is thrown horizontally with a speed v from a height h, it describes a curved path ruled exclusively by gravity until it eventually hits the ground.
The range or maximum horizontal distance traveled by the object can be calculated as follows:

If the range is known and we are required to find the initial speed of launch, then we can solve the above equation for v as follows:

Cliff drivers jump into the sea from a height of h=36 m and must pass over an obstacle d=6 meters away from the cliff.
Let's calculate the speed needed:



The cliff drivers must leave the top of the cliff at 2.21 m/s