a) Suddenly, the student at the top of the building releases the portable speaker from rest at the top of the building, and it accelerates towards the ground with an acceleration of a, - 9.8ms 2. What is the speed of the speaker 1 metre(s) before it hits the ground? V speaker ms -1 b) The speaker at rest was emitting a tone of f - 604Hz when it was dropped. What is the wavelength of the sound wave observed by the audio detector, when the speaker is 1 metre(s) from the ground (the position specified in part a))? You may assume the speed of sound to be v sound = 343ms 1. m c) If the student on the ground throws the detector upward towards the falling speaker; The relative velocity between the speaker and detector will (No answer given) + The wavelength observed by the detector will (No answer given) + The frequency observed by the detector will (No answer given)Two young physicists are playing with an audio detector and portable speaker atop a h. = 31 m tall building, as in the below picture: Portable Speaker h Audio TO Detector a) Suddenly, the student at the top of the building releases the portable speaker from rest at the top of the building, and it accelerates towards the ground with an acceleration of dy - 9.8ms 2. What is the speed of the speaker 1 metre(s) before it hits the ground? ms U.speaker