(a) what is the force of gravity between two 1160 kg cars separated by a distance of 35 m on an interstate highway? (b) how does this force compare with the weight of a car?

Explanation:

(a) Mass of the cars, m₁ = m₂ = 1160 kg

Distance between cars, d = 35 m

The gravitational force between two cars is given by :

So, the force of gravity between the cars is .

(b)The weight of a car is given by :

W = 11368 N

On comparing,

So, the weight of the car is times the force of gravitation between the cars.