An electron has an initial velocity v⃗ 0=(7.0×10^4m/s)j^. it enters a region where e^=(1.7i^+8.7j^)×10^4n/c. part adetermine the vector acceleration of the electron as a function of time. express your answer using two significant figures. enter the x and y components of the acceleration separated by a comma. part bat what angle θ is it moving (relative to its initial direction) at t = 2.0 ns ? express your answer using two significant figures.

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?