What is gravitational force?

• a force that attracts any object
• a force that pushes any object
• a force that shrinks any object
• a force that enlarges anyobject

Tags

NGSS.HS-PS2-4

Which of the following formulas is the correct equation for the law of Universal gravitation?

• $F=\frac{GM_1M_2}{d^2}$

• $F=mg$

• $F=\frac{Gd^2}{m_1m_2}$

• F= $F=\frac{KQ_1Q_2}{d^2}$

Tags

NGSS.HS-PS2-4

A moon is located at 1 unit out from the planet it orbits. If that moon was orbiting at 2 units out from the planet, how much would the gravitational force on the moon be compared to its distance at 1 unit?

• $\frac{1}{4}$ of the original force

• $\frac{1}{6}$ of the original force

• twice as much

• 4 times as much

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

A person on the Earth weighs 180 pounds. How much will they weigh on the moon? ( Note: The moons "g" is  $\frac{1}{6}$ times that of Earth)

• 30 lbs

• 360 lbs

• 0- you are weightless in space

• 18 lbs

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

If I double the mass of one object without changing anything else, What would happen to the gravitational force between that object and any other object?

• Doubles

• Quadruples

• Cut in Half

•  $\frac{1}{4}$  as much

Tags

NGSS.HS-PS2-4

What happens to Gravitational force if I double both of the masses but don't change their distance?

• doubles

• half as big

• 4 times bigger

• $\frac{1}{4}$ as much or 4 time smaller

Tags

NGSS.HS-PS2-4

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

• 2.67 * 10^-11 N

• 0.4 N

• 6.67 * 10^-11 N

• 1.3 * 10^-8 N

Tags

NGSS.HS-PS2-4

Find the distance between two objects whose masses are m₁ = 4,500 kg, and m₂ = 8,700 kg; if the gravitational force between them is F = 2.0 x 10^-8 N.

• 130565.25 m

• 361.34 m

• 0.19575 m

• 0.783 m

Tags

NGSS.HS-PS2-4

The reason why ocean tides happen is

• Electrical forces between the sun and the moon

• gravitational forces between the Earth and the moon.

• Magnetic forces between the Earth and the moon

• Motion of the moon around the earth

Tags

NGSS.MS-PS2-4

Which of the following does not apply to the moment when Spring tides happen?

• during new moon

• during full moon

• when the moon and the earth are alligned with the sun

• during quarter moon

Tags

NGSS.MS-ESS1-1