What does the term “speed” describe? the cyclist who travels 20 kilometers per hour for 15 kilometers

the turtle that moves very slowly from the rock to the water

the car that wins the race

all of the above

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.)