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- 1. Multiple Choice
If the mass of either m

_{1}or m_{2}is increased then the force of gravitation between them will...increase

decrease

stay the same

- 2. Multiple Choice
If the distance between 2 masses is increased then the force of gravitation between them will...

increase

decrease

stay the same

- 3. Multiple Choice
If the mass of either m

_{1}or m_{2}is decreased then the force of gravitation between them will...increase

decrease

stay the same

- 4. Multiple Choice
If the distance between 2 masses is decreased then the force of gravitation between them will...

increase

decrease

stay the same

- 5. Multiple Choice
The radius r (the distance between the masses), is found by measuring

From the nearest surface of one object to the other's surface

From the center of one mass to the center of the other's center

From the farthest surface of one object to the other's surface

- 6. Multiple Choice
Two spherical objects have masses of 400 kg and 50 kg. Their centers are separated by a distance of 15 m. Find the change in the gravitational attraction Force between them if the first mass changes to 800 kg and the other mass and distance do not change.

It does not change.

It increases by a factor of 2 times stronger

It decreases by a factor of 1/2 as weak

It increases by a factor of 1/2 times stronger

- 7. Multiple Choice
Two spherical objects have a force of gravitation between them. Find the change in the gravitational attraction Force between them if the first mass doubles in size and the other mass changes to be half as massive as before and distance do not change.

It does not change the overall force of gravitation.

It increases by a factor of 2 times stronger

It decreases by a factor of 1/2 as weak

It increases by a factor of 4 times stronger

- 8. Multiple Choice
Two spherical objects have masses of 100 kg and 50 kg. Their centers are separated by a radius distance of 10 m. Find the change in the gravitational attraction Force between them if only the radius distance increases to 20 m in length.

It does not change the overall force of gravitation.

It increases by a factor of 2 times stronger

It decreases by a factor of 1/4 as weak

It increases by a factor of 4 times stronger

- 9. Multiple Choice
Two spherical objects have masses of 50 kg and 50 kg. Their centers are separated by a radius distance of 20 m. Find the change in the gravitational attraction Force between them if the radius distance doubles in length, and the one mass doubles while the other mass doesn't change.

It does not change the overall force of gravitation.

It increases by a factor of 2 times stronger

It decreases by a factor of 1/4 as weak

It increases by a factor of 4 times stronger

- 10. Multiple Choice
What is the overall effect on the force due to the changes?

Force increases and is 2 times stronger .

Force increases and is 4 times stronger now.

Force decreases and is 2 times weaker now.

The force does not change since the effects cancel out.

- 11. Multiple Choice
What graph best represents the effect on the Gravitational Force Fg as one mass, m1, in the system increases?

O <---------------> o

A

B

C

D

- 12. Multiple Choice
If you were standing on the moon, and then the moon was suddenly hollowed out so that the mass of the moon decreases while keeping the same size and radius, then what effect occurs to your weight (Remember: Weight is the gravitational force...)?

My weight would not change.

My weight would increase.

My weight would decrease.

- 13. Multiple Choice
Which Scientist drew the conclusion that the force that causes objects to fall to Earth is the same force that causes planets to stay in orbit with the Sun?

Galileo Galilee

Tycho Brahe

Isaac Newton

Albert Einstein

- 14. Multiple Choice
Which Scientist drew the conclusion that all masses accelerate at the same rate regardless of their differences in mass?

Galileo Galilee

Tycho Brahe

Isaac Newton

Albert Einstein

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