1.A tennis ball is dropped from 1.3 m above the
ground. It rebounds to a height of 0.956 m.
With what velocity does it hit the ground?
The acceleration of gravity is 9.8 m/s^2
(Let
down be negative.)
Answer in units of m/s
2.With what velocity does it leave the ground?
Answer in units of m/s...
questions concerning about the brushless dc motor
in a brushless dc motor,does the power given by a battery move in and out throughout the electric current of the magnetic wire?
I have the magnetic wires both parallel to each other and placed at the negative and positive terminal of the...