The car's kinetic energy is
KE = (1/2) (mass) (speed)² .
We notice that the speed is squared in the formula for KE,
so the KE varies as the square of the speed.
If the speed changes from 20mph to 60mph, it has tripled.
So the KE increases by a factor of (3²) = 9 times the original KE.
A pH scale goes from 0 - 14.
7 is in the middle so it is neutral
Answer:
The source of all wave motion is a disturbance in matter or a vibration