Physics - 12/3/21

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

• 2.96x10^-7N

• 3.00x10^-6N

• 2.22x10^-9N

• 2.23x10^-8N

If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?

• Doubles
• Quadruples
• Cut in Half
• 4x Smaller

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

In this equation...

• G is the gravitational field strength
• r is the distance between the 2 masses
• F is the repulsive gravitational force
• m is the momentum of the mass

What is the gravitational force between the Earth and the Moon if they are 3.84 x 10⁸ m apart? the mass of Earth is 5.98 x 10 ²⁴ kg and the Moon's mass is 7.35 x 10²² kg.

• 2.56 x 10²⁴ N

• 1085.46 N

• 1.99 x 10²⁰ N

• 3.45 x 10²⁰

Calculate the gravitational force between two objects with a mass of 50 kg that are 2 m apart.

• 4.2x10-N^-8

• 2.2x10¹⁰N

• 4.2x10¹⁴N

• 2.2x10¹⁴N

Calculate the force of gravity (F) between two objects whose masses are m₁ = 100 kg and m₂ = 1000 kg if they are separated by a distance of d = 500 m.

• 2.67 * 10^-11 N

• 6.67 * 10^-11 N

• 0.4 N

• 1.3 * 10^-8 N

Force of gravity is directly proportional to

• Mass
• Weight
• Distance
• Time

Force of gravity is inversely proportional to

• Mass
• Weight
• Distance
• Time

Why doesn’t the gravitational pull between the Earth and the moon cause the moon to crash into the Earth?

• Because the moon has a velocity caused by inertia that keeps it moving tangentially to the Earth's surface.

• Because the moon is happy being with the Earth.

• Because the force of gravity is too weak.

• Because the force of gravity by the sun on moon is stronger than that of the Earth on moon.