Which statement is true for a sound wave entering an area of warmer air?
a: the wave travels faster and with the same wavelength.
b: the wave travels at the same speed but with an increased wavelength.
c: the wave travels at the same speed and with the same wavelength.
d: the wave travels slower and with an increased wavelength.
e: the wave travels faster and with an increased wavelength.

A:The wave travels faster and with the same wavelength.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over