We need to calculate speed , so we don't need to consider direction.
speed =distance/time
=(80+60)/2
=70.
But if we were to calculate velocity,we would need to consider the direction.
The direction of resultant displacement would be in north east direction with displacement
=√60^2 +80^2
=100km
The average velocity=100/2=50kmph
Through the 1/r law, it was concluded that for the sound intensity or pressure is directly proportional to distance or radius. That is,
p = k/r
where k is the proportionality constant. If the distance of a sound wave is quadrupled then, the intensity of the sound is decreased to 1/4 of its original value.
I don't know I guess its the plate tectonics
Answer:
C. wavelength = speed/frequency
Explanation: I got it right
It will be launched in the direction it was going in when the centripetal force is removed
