Answer:
Explanation:
Force of attraction between two masses M and m at distance d
= G mM / d² where G is universal gravitational constant .
Force of attraction between two cars of masses 1000kg each
= 6.67 x 10⁻¹¹ x 1000 x1000 / 20²
= 1.6675 x 10⁻⁷ N
Weight of car
mg
1000 x 9.8
= 9.8 x 10³ N
Ratio = force / weight of car
= 1.6675 x 10⁻⁷ / 9.8 x 10³
= .17 x 10⁻¹⁰
17 x 10⁻¹²
