Newton's Universal Law of Gravitation

1.

Multiple Choice

30 sec

1 pt

When placed at equal distances apart, the greatest gravitational attraction will be between two

skateboards

bowling balls

school buses

2.

Multiple Choice

30 sec

1 pt

Which is needed to determine the amount of gravitational force between two objects?

distance and mass

weight and time

area and weight

3.

Multiple Choice

30 sec

1 pt

The gravitational force exerted by an object depends on its

volume

mass

weight

4.

Multiple Choice

1 min

1 pt

What is gravitational force?

It makes objects at rest start moving.

It makes objects that are moving stop.

The force of attraction between two objects.

It pulls you into space.

5.

Multiple Choice

20 sec

1 pt

Gravity on moon is less than the gravity on earth because

a. moon's mass is less

b. moon's mass is more

c. moon's mass is equal to Earth

d. moon has no mass

6.

Multiple Choice

30 sec

1 pt

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

more

same

dosen't matter

less

7.

Multiple Choice

30 sec

1 pt

What is the proper setup of the gravitational force formula?

F_g= Gm²/r

F=ma

F_g= Gr²/(m₁+m₂)

F_g= G (m₁m₂)/r²

8.

Multiple Choice

30 sec

1 pt

What effect does increasing the distance between the two objects do to the gravitational force?

The distance between two objects has no effect on the gravitational force

It increases

It stays the same

It decreases

9.

Multiple Choice

30 sec

1 pt

When do gravitational forces exist between two objects?

They only exist between microscopic objects.

They are always present between any two objects.

Gravitational forces only act on objects falling on Earth.

They only exist for objects in space.

10.

Multiple Choice

30 sec

1 pt

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m.

F_g = 3.7*10^-8 N

F_g = 1.3*10¹² N

F_g= 1.1*10⁵ N

F_g = 7.2*10^-7 N

11.

Multiple Choice

30 sec

1 pt

What would the gravitational force be between the Sun and Mars if they were 2.3*10¹¹m apart? The masses for the Sun and Jupiter are 1.99*10³⁰kg and 6.42*10²³kg, respectively.

F_g = 3.8*10¹⁵N

F_g = 2.8*10^-42 N

F_g = 1.6*10²¹ N

F_g = 4.6*10^-75N

12.

Multiple Choice

30 sec

1 pt

What does the variable G in the gravitational force equation represent? $F_g\ =\ G\ \frac{m_1\ m_2}{r^2}$

Universal gravitational constant

Combined masses of the two objects

Gravitational force

Dielectric constant

13.

Multiple Choice

30 sec

1 pt

Which of the following changes would increase the gravitational force between two objects?

Increase G

Increase the mass

Increase r

Decrease G

14.

Multiple Choice

30 sec

1 pt

What is the gravitational force between a 140 kg tree and a 798 kg Lotus Elise Sprint that are 15 m away?

6.6*10^-7 N

4.8*10⁴ N

3.3*10^-8N

7.4*10¹²N

15.

Multiple Choice

30 sec

1 pt

Which of the following is true?

m1 feels more force

m2 feels more force

they feel equal forces

the net force is zero, so they feel no force

16.

Multiple Choice

45 sec

1 pt

If you double the mass of m2, by what factor will the gravitational force change?

F/2

2F

4F

F/4

17.

Multiple Choice

30 sec

1 pt

How are mass and gravitational force related?

indirectly

inversely

inverse squarely

directly

18.

Multiple Choice

45 sec

1 pt

If you double the distance between m1 and m2 and triple the mass of m1, by what factor will the gravitational force change?

3F/4

3F/2

4F/3

5F

19.

Multiple Choice

30 sec

1 pt

How are distance and gravitational force related?

indirectly

inversely

inverse squarely

directly

20.

Multiple Choice

30 sec

1 pt

How can you explain that we have a stronger gravitational attraction with Earth than the Sun?

The sun has a larger mass

The sun has a smaller mass

Closer to center of sun

Closer to center of Earth

21.

Multiple Choice

45 sec

1 pt

What states that "every object in the universe attracts every other object"?

Law of Universal Gravitation

Newton's First Law of Motion

My mother

Inertia & gravity

22.

Multiple Choice

30 sec

12 pts

Gravity attracts all objects towards one another.

False

True

It depends

23.

Multiple Choice

15 mins

1 pt

Which configuration will result in the greatest gravitational force?

small masses far apart

large masses far apart

small masses close together

large masses close together

24.

Multiple Choice

2 mins

1 pt

The number 6.67 x 10^-11 N* m² / kg² is called the

Universal speed constant

centripetal force

Universal Gravitational constant

Earth's Gravitational constant

25.

Multiple Choice

30 sec

12 pts

The law of universal gravitation is credited to whom?

Einstein

Galileo

Darwin

Newton

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