Which property of a substance is not affected by physical changes?
a)reactivity
b)size
c)shape
d)position

How do scientists think that gravity affected the formation of our solar system?

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Ab c or d ? i’m not sure what the answer is