Aperson of mass 81.63 kg (weighs 800 n) wants to climb a ladder to perform a stunt on the icy surface of lake champlain. there is no friction between the feet of the ladder and the surface of the ice. assume that the mass of the ladder is small enough that it can be ignored. each half of the ladder has a length of 2.5 m, and the two halves are joined together by a 70 cm tie rod connecting the midway points of each side. if the person stands 3/5 of the way up the ladder, what is the tension in the tie rod? be sure to enter units in your answer.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?