¿Qué profundidad tiene un pozo si un cuerpo cae libremente en 2 s hasta el fondo? ¿Qué distancia recorre en 1 s?

What is the length x of the side of the triangle below? (hint: use the cosine function)

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?

How to calculate voltage drop in a series circuit