CE Predict/Explain Two youngsters dive off an overhang into a lake. Diver 1 drops straight down, and diver 2 runs off the cliff with an initial horizontal speed v0.(a) is the splashdown speed of diver 2 greater than, less than, or equal to the splashdown speed of diver 1? (b) Choose the best explanation from among the following:

I. Both divers are in free fall, and hence they will have the same splashdown speed.

II. The divers have the same vertical speed at splashdown, but diver 2 has the greater horizontal speed.

III. The diver who drops straight down gains more speed than the one who moves horizontally.

Solution 9P

Step 1 of 3</p>

In this problem, for the two youngsters dive off an overhang into a lake and the diver 1 drops straight down and the diver 2 runs off the cliff with an horizontal speed , so we need to find (a) the splashdown speed of diver 2 is greater than, less than or equal to the splash down speed of diver 1, and (b) to choose the best statement among the following, given from the problem.

Step 2 of 3</p>

Let us consider the horizontal and vertical motions of the divers.

As long as the air friction is neglected there is no acceleration both the divers in the horizontal direction, so the divers will continue moving horizontally at the same speed.And also the time of flight for each diver is same since both the divers falls in similar vertical distance.

Hence, the splashdown speed of diver 2 is greater than the splashdown speed of diver 1.