gabriieldelacruz16

09.10.2021 • 

Physics

Imagine now that the blue dot is the ambulance or a police car that is passing at a high speed next to you (you are the receiver). Using what you have learned so far about the frequency of sound waves, what do you think explains the way you are hearing the sound from the siren? Make sure to explain this in terms of frequency of sound waves.

Ответ:

victordguerrero2535

16.11.2021

Physics

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Speed, v = 8 m/s
mass, m = 1550 kg
time = 8 sec

force exerted by suv= mv/t
= 1550×8/8
= 1550 n

so, force reqd. to stop it would be the same bit in opposite direction.

so, force reqd. = -1550 n

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