Answer: hertz (Hz) i think :)
The watch hand covers an angular displacement of 2π radians in 60 seconds.
ω = 2π/60
ω = 0.1 rad/s
v = ωr
v = 0.1 x 0.08
v = 8 x 10⁻³ m/s
It comes from the sun, and then it is converted to energy/electricity (by solar panels)
It is same as calculating maths for math
example force. because you can say" I applied 3 newtons downward to the floor".
force has magnitude and direcion
