Gregory is visiting his grandmother, who lives 200 km from his house. While traveling there, Gregory had an average speed of 100 km/h. Which of the following is true about Gregory's trip?
O
A
Gregory must have maintained a constant velocity of 100 km/h.
C
B
Gregory must have maintained a constant speed of 100 km/h.
Gregory must have stopped sometime during his trip.
Gregory must have completed the trip in 2 hours.

Gregory must have stopped sometime during his trip.

Explanation:

He must have stopped because he would have run out of gasoline.

need to see circuit to get time constant

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods