Una joven va en su bicicleta. Cuando llega a una esquina, se detiene a tomar aguade su cantimplora. En ese momento pasa su amigo en bicicleta y ese va a una rapidez constante de 8m/s despues de 20s la joven empieza nuevamente su movimiento acelerado a 2.2 m/s2 a) en cuanto tiempo alcanzara a su amigo b)a que distancia lo alcanzara *es urgente pl

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)