Answer:
Option B is correct.
Explanation:
Given data
Height of the hill = AB = 1 m
Distance traveled along the rough bottom surface = AC = 2 m
Now from the ΔABC
![\sin \theta = \frac{AB}{AC}](https://tex.z-dn.net/?f=%5Csin%20%5Ctheta%20%3D%20%5Cfrac%7BAB%7D%7BAC%7D)
![\sin \theta = \frac{1}{2}](https://tex.z-dn.net/?f=%5Csin%20%5Ctheta%20%3D%20%5Cfrac%7B1%7D%7B2%7D)
°
We know that the coefficient of kinetic friction is
![\mu = \tan \theta](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Ctan%20%5Ctheta)
![\mu = \tan 30](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Ctan%2030)
0.5
This is the value of the coefficient of kinetic friction
Thus option B is correct.
The answer is B. metalloids
(boron, silicon, germanium, arsenic, antimony, tellurium, astatine, and polonium)
(664.2 km) · (1,000 m/km) · (100 cm/m) =
(664.2 · 1,000 · 100) (km·m·cm/km·m) =
66,420,000 cm
Answer:
Maybe she kicks it to a wall and it bounces back to her?
Explanation:
It could measure the person's speed or also known as velocity. The object could be similar to a police officer using a radar gun to measure someone's MPH/speed.