F=9/5C+32 is the formula for Celsius to Fahrenheit.
It's definitely not B or C. There are things missing from A and D so we can't narrow it down any farther.
Nothing happens. The frequency is determined at the source,
and it doesn't change along the way.
Displacement s = (u+v)*t/2 (t refers to delta time)
= (0.45 + 2.7)*6/2
= 3.15*3
= 9.45 m
