On march 17, 2019 Chloe Cunliffe, a senior high school student from West Seattle High School vaulted 4.48 m to earn the position of top female athlete in the United States. (Russel, 2019) (Please explain the answer to me) i. If Chloe weighed 108 pounds on the day of the jump, calculate her maximum potential energy. Show all your work including formulas, units and significant figures.

ii. Calculate Chloe's maximum velocity on her approach. Show all your work including formulas, units and significant figures.​

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

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?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?