Question

1. a roller coaster is at the top of a 19 m hill. the coaster has a mass of 200 kg. the coaster (at this moment) has potential energy. calculate it.

Explanation:

Step1: Identificar la fórmula

La energía potencial gravitacional está dada por $U = mgh$, donde $m$ es la masa, $g$ es la aceleración gravitacional ($g = 9.8\ m/s^{2}$) y $h$ es la altura.

Step2: Sustituir valores

Dado que $m = 200\ kg$, $h=19\ m$ y $g = 9.8\ m/s^{2}$, entonces $U=(200\ kg)\times(9.8\ m/s^{2})\times(19\ m)$.

Step3: Realizar cálculo

$U = 200\times9.8\times19\ J=37240\ J$.

Answer:

$37240\ J$