A person walks north for 5 miles, then south for 8 miles, and then north for 6 more miles. The entire trip takes 8 hours. Distance travelled: miles
Displacement: miles
Average speed during trip: miles/hour
Average velocity during trip: miles per hour (north or south?)

a c d and f

just finished the assignment

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock