Speed is a component of skill related fitness. what does speed enable you to do

What is work? how much work is done to move an object 0 meters?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)