None of the choices is correct.
If two runners take the same amount of time to run a mile,
they have the same average speed. But their velocities
are not the same unless both runners begin and end their
run at the same points.
Speed is (distance covered) divided by (time to cover the distance).
Velocity is not. It's something different.
'Velocity' is not just a bigger word for 'speed'.
Answer:
I would love to help but I don't know I'm so sorry
No. The moon always keeps the same side facing us. Its rotation and revolution periods are equal.
Wave speed = frequency * wavelength
Wave speed = 4 * 25
Wave speed = 100 m/s
