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e initial velocity of a military jet is 245 m/s eastward. The pilot ignites the afterburners, and the jet accelerates east a constant rate for 1.95 s. The final velocity of the jet is 300 m/s eastward. What was the jet's displacement during me it was accelerating? m to the 35 Need Help? ResWaitch My Notes O Ask Your Tea My Notes O Ask Tea 2.5/5 points 1 Previous Answers KatzPSE11 2 P 080 MI Trying to determine its depth, a rock climber drops a pebble into a chasm and hears the pebble strike the ground 3.68 s later (a) If the speed of sound in air is 343 m/s at the rock climber's location, what is the depth of the chasm? What is the percentage of error that would result from assuming the speed of sound is infinite? (b) 4 97 Your response differs from the correct answer by more than 10%. Double check your calculations 96 Need Help? RadMaster h -5 points KBPSEn 2 P 057 My Notes Ask Your Teacher While strolling downtown on a Saturday afternoon, you stumble across an old car show, As you are walking along an alley toward a main street, you glimpse a particularly stylish Alpha Romeo pass by. Tall buildings on either side of the alley obscure your view, so you see the car only as it passes between the buildings. Thinking back to your physics class, you car's estimate between the two buildings to be Type here to search

Answer 1

a) 343 times t_1 = 1/2 times 9.8 times t^2_2 = > 343 times (3.68 - t_2) = 4.9t^2_2 = > 1262.24 - 343t_2 = 4.9t^2_2 = > 4.9t^2_2 + 343 t_2 -1262.24 = 0 = > t_2 = 3.58 So, h = 1/2 times 9.8 times (3.5)^2 = > h = 60m b) If sand's velocity is infinite, so 3.68 is taken to cover the well. So, h = 1/2 times (3.68)^2 times 9.8 = 66.36m. So, % = 66.36-60/60 times 100 = 10..59% 10.59%