An object moves 15m in the positive direction in 5 seconds. What is its Velocity? The object then moves 10m in the negative direction in the 5 seconds. What is its new velocity?
+3m/s.+2m/s
ООС
+3m/s, -2m/s
-3m/s, 2m/s

Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.