Which of the following statements is true?* A. Weight and mass are the same thing.
B. Weight is the gravitational force an object experiences due to its mass and
gravitational acceleration.
C. The weight of an object on Earth is less than the weight of the same object on the
moon, but the mass remains the same.
D. All of the above statements are true.

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?