Question

42.A police car is at a red light. A car behind him foolishly tests his luck and runs the red light. The officer immediately flicks on his siren and begins to chase the car, accelerating at a rate of 1.5The frequency of the siren is 500Hz. If you are standing at the red light, what frequency do you percieve 6 seconds after the police officer began chasing the car? 8 m. 340 select 528H2 select 500Hz 8 472Hz select select 487Hz select 514Hz

Answer 1

Given = > {a = 1.5 m/s^2, elementof = 6s, v_1 = 0 f = 500 Hz, c = 340 m/s } speed of car at t = 6s, = > V_2 = v_1 + at v_2 = 0 + 1.5 times 6 = > v_2 = 9 m/s observed frequency = > v_s = 0 observer f prime = f [c + v_5/c + v_2] = > f prime = 500 [340 + 0/340 + 9] = > f prime = 487.22 Hz