De entre las siguientes medidas: La longitud de la pared del salón de tu casa
La superficie de la mesa
El volumen de tu ordenador
La temperatura de tu cuarto
La velocidad de tu bicicleta
La masa de una barra de pan
¿Cuáles son directas y cuáles indirectas?

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?