A teacher rakes a group of students on to a sports field to measure the speed of sound in air the teacher fires a starting pistol
it produces a loud bang and a flash of light at the same time
the students take measurements
describe how the measurements are made and used to determine the speed of sound in air
you may draw a labelled diagram to help with your answer
(6 marks so 6 points)

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?