You are sharing a house with a few roommates. one of them plays on the basketball team, and is exactly 200 cm tall. the heights of you and the other roommates are 188 cm, 175 cm, and 160 cm. you want to buy the minimum height mirror that will allow all of you to see your entire selves, when the mirror is mounted in a fixed position on the wall.
assume each person's eyes are at a level 95% of their height.
a) how tall a mirror should you buy?
cm

b) how many centimeters above the floor should the top of the mirror be?
cm

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?