In a car race, the force of attraction between the 1st and 2nd place cars is 3.0349 x 10 -7n. if the 1st place car has a mass of 700 kg and the 2nd place car has a mass of 650 kg, then what is the distance between the two cars?

10 m

Explanation:

By the Newton's Law of gravitation

F = Gm₁m₂/r²

where F = gravitational attractive force,

          G = Universal gravitational constant

m₁ & m₂ = masses involved

           r = distance between centers of gravity of two cars

So you get,

F = 3.0349 X 10⁻⁷ = 6.674×10⁻¹¹ ×700×650/r²

r = 10 m

So if the two cars are identical the distance between two cars is 10 m,

else the distance between the centers of gravity of two cars is 10 m

e/c, where e is its total energy