Question

Bob and Susan are in the space program with NASA. They are floating motionless in space, 3.5 meters from each other. Bob has a mass of 85 kg, and Susan has a mass of 78 kg. How much gravitational force is there between them?

A) 4.7 x 10^-7 N
B) 2.6 x 10^-9 N
C) 1.9 x 10^-10 N
D) 3.8 x 10^-11 N

Answer 1

The gravitational force between Bob and Susan is approximately 4.7 x 10^-7 N.

Step-by-step explanation:

The gravitational force between two objects can be calculated using the formula:

F = G * (m1 * m2) / r^2

Where:

• F is the gravitational force
• G is the universal gravitational constant (6.674 × 10^-11 N·m² kg²)
• m1 and m2 are the masses of the two objects
• r is the distance between the centers of the two objects

In the given scenario, Bob and Susan have masses of 85 kg and 78 kg respectively, and they are 3.5 meters apart. Plugging these values into the formula, we get:

F = (6.674 × 10^-11 N·m² kg²) * (85 kg * 78 kg) / (3.5 m)^2

Simplifying the equation will give us the answer, which is approximately 4.7 x 10^-7 N.