16 J'avance à mon rythme 18 Schematiser et calculer
Un satellite Météosat
SG tourne autour de
la Terre sur une tra-
jectoire circulaire à
36 000 km d'altitude.
Le rayon de la Terre est
6 300 km,
.
Je réponds directement
Schématise la situation et représente les forces de
gravitation s'exerçant entre la Terre et ce satellite en
prenant comme échelle 1 cm pour 100 N.

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?