In the equation (v2 - v1)
a=
t
what does v1 and v2 represent

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Astate of matter all that has define volume and can flow is a(n)

What is the mass of the same rock on the earth