You go skydiving in the upper atmosphere and you want to deploy your parachute when you reach the speed of sound, 343 m/s. How many seconds should you wait after
stepping out of the plane before deploying your chute? Ignore air friction.

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.)