Ben walks 500 meters from his house to the corner store. he then walks back toward his house but stops to talk to a neighbor when he is 200 meters from the corner store. if it takes ben 910 seconds from the time he leaves his house until he stops to talk to his neighbor, what is his average velocity? (round your answer to the nearest tenth of a meter per second.)

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system