Sears Jet

Sears Jet
I need help with these physics questions?

1. In the 2000 Summer Olympics in Sydney, Australia, women 400 m swimming relay was won by the United Kingdom states. The four U.S. women swam each leg of 100.0 m of the race with the average velocity follows: Barbara Bedford (back): 1.6289m / s Megan Quann (chest): 1.5085m / s Jenny Thompson (fly): 1.7467 Dara Torres (freestyle): 1.8737 How was time to end the team in the world record time of 4.08 minutes set by the chines in 1994? 2. While repairing a radio transmitter located at 410.0m defective Sky Tower deck Sears, Lyle drops his hammer falls all the way to the floor) How long will it take for Lyle Hammer to Fall? b) How fast will the hammer hit the pavement? 3. A plane lands with a speed of 69m / s. Once the plane touches down, is 750 meters from the runway on which to reduce speed to 6.1 m / s. Calculate the acceleration of the aircraft during landng.

1)>>> Ans — 0.11 s compute the time spent by each player over time formula = distance / speed and add the times of the players for a total time and then subtract it from 4.08 s. 2)>>> — Ans) – 9.14sb) —89.18meter/second square 3)>>> — Ans square -3.15m/second