(a) what is the force of gravity between two 1170 kg cars separated by a distance of 28 m on an interstate highway? n

Force is the product of mass and acceleration. The Force between the two-car is 1.1646 x 10⁻⁷ N.

Force can be defined as an influence that can change the motion of an object. It can be given by the formula,

F = m x a

Given to us

Masses of the car, m = 1170 kg

Distance between the car, d = 28 m

We know that according to the force of gravity,

G = gravitational constant (6.67 × 10⁻¹¹ N·m²/kg²),

m₁ = mass of object 1

m₂ = the mass of object 2

d = distance between two objects

Substitute the values,

Hence, the Force between the two-car is 1.1646 x 10⁻⁷ N.

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Explanation:

The force of gravity between two objects is given by:

where

G is the gravitational constant

m1, m2 are the masses of the two objects

r is their separation

In this problem, we have

m1 = m2 = 1170 kg is the mass of each car

r = 28 m is their separation

Substituting,