A 50Kg wagon is pushed against a wall with a spring between the wall and the wagon. The spring has a stiffness coefficient of 300 N/m. If the spring is compressed a distance of .4m and the wagon continues to apply a 35N force toward the wall, then what will the acceleration of the wagon be?

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?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.