So if i say the frequency heard of the moving car is F of sound * (v/v-velocity of moving car) then i can just say that the difference between that value and the regular f of sound equals the 5.8 beat frequency right?
Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward an observer at 13 m/s, a beat frequency of 5.8 Hz is heard. What is the frequency the horns emit? Assume T = 20°C.
I understand that this is related somehow to the doplar...
I think i figured it out! Distance and velocity are related in such a way that distance increases with the square of velocity. so if the velocity were to increase twice as much, then the distance would increase by 4 times. Therefore if my velocity increases by 3/4 the distance will increase...
Sorry i double posted, on my other post someone said that i had posted in the wrong section, and i was just trying to fix that. sorry.
The final velocity is zero. I understand that. But for the car to come to a stop, there would have to be a negative deceleration due to friction maybe. I...
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 1.55 m and cross the bar with a speed of 0.70 m/s
I have tried...
If the speed of a car is increased by 75%, by what factor will its minimum braking distance be increased, assuming all else is the same
I am not sure what formulas i should use for this problem. Am i souposed to use the formula for Final velocity which is
Velocity Final^2=...
If the speed of a car is increased by 75%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time
I'm not sure how to start this problem. I am not sure what to do without any numbers to use in a formula. I do not know...