A tennis ball is thrown against a vertical concrete wall that is fixed to the ground. The ball bounces off the wall. How does the force exerted by the ball on the wall compare with the force exerted by the wall on the ball А The force exerted by the ball is greater
B The forces exerted by the ball and the wall have the same magnitude.
C. The force exerted by the ball is smaller
D The relative magnitudes of the forces cannot be determined without knowing how long the ball and the wall are in contact

In the first law of thermodynamics, triangle e=q-w, what does q stand for

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?

Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false