Answer:
B) Force of gravity
Explanation:
As it is the force which acts downward on the body towards the ground, it is clearly the force gravity represented by the arrow at A.
Answer:

Explanation:
Given that
Height = h
Radius = R
From energy conservation

At point B
The minimum speed to complete the the circle

So the kinetic energy at point B




Without falling off at the top (point B)




833.33 sec
5000m/6ms
Divide 5000 by 6 and you get your answer !!
It is C, Left the Meet after her events were over
Answer:0.3meters
Explanation:
wavelength=velocity ➗ frequency
wavelength=300.80 ➗ 1030.80
Wavelength=0.3m