Question

You are evaluating the safety of a high school athletic diving program. Safety analysis has determined that hitting the water faster than 20 m/s has been linked to head and neck trauma. You observe a diver jump straight up from the high board, 10.0 m above the water's surface. Later in the dive, she passes near a lower diving board that is 3.0 m above the water. With your stopwatch, you determine that it took 0.20 seconds to enter the water from the time the diver passed the lower board. You must determine if this dive is safe. The following information may be helpful. You do not know the diver's speed as she comes off the board. It is not 0 m/s. You cannot use vave-Δι/a. That is an average, so it is faster than her velocity at the low board and slower than her velocity at the water. .

What is the divers speed at the start of her drive? (Hint: It is the same as when she passes the high board)

The diver jumps off the high board a second time with the same speed, but this time she jumps at an angle 70 degrees at an angle from the horizontal.

What is the divers velocity as she hits the water this time?

Answer 1