Question

Question 1 (5 points)

While Kepler supported the Copernican model of the universe, Kepler concluded the following:
Question 1 options:


A)
The circular orbits of the Copernican model werent correct. Paths of the planets were rectangular.


B)
The circular orbits of the Copernican model werent correct. Paths of the planets were elliptical.


C)
All other bodies in the universe move around the earth in circular paths.


D)
All other bodies in the universe move around the moon in triangular paths.
Question 2 (5 points)

Copernicus's model of the universe differs from Ptolemy's because Copernicus believed
Question 2 options:


A)
Earth orbits the sun but remains stationary on its axis.


B)
The sun and Earth share a central point from which the other planets rotate around them.


C)
Earth rotates on its axis and orbits the sun.


D)
Earth is still at the center but rotates on its axis.
Question 3 (5 points)

Which of the following statements is accurate?
Question 3 options:


A)
If an object is said to be decelerating, its velocity must be increasing.


B)
If an object's velocity is changing, it's experiencing either acceleration or deceleration.


C)
If an object's velocity remains constant, its acceleration must be increasing.


D)
If an object's velocity decreases, then the object is accelerating.
Question 4 (5 points)

According to Ptolemy's model of the movement of celestial bodies,
Question 4 options:


A)
the Earth rotates around the moon.


B)
the sun is the center of the universe.


C)
the Earth rotates around the sun.


D)
planets orbit in circular paths around the Earth.
Question 5 (5 points)

Two bouncy balls colliding with each other is an example of what type of collision?
Question 5 options:


A)
Mass collision


B)
Inelastic collision


C)
Parallel collision


D)
Elastic collision
Question 6 (5 points)

Kepler's laws follow which law discovered by Sir Isaac Newton?
Question 6 options:


A)
Universal Laws of Attraction


B)
Universal Law of Force


C)
Universal Gravitational Law


D)
Universal Law of Friction
Question 7 (5 points)

A moon rock has a mass of 125 kg. What's the force of gravity acting on the rock, on the moon?
Question 7 options:


A)
78.125 N


B)
1,960 N


C)
1225 N


D)
200 N
Question 8 (5 points)

The surveyor probe left on the moon in 1966 has a mass of 270 kg. What's the force of the moon's gravity on the probe?
Question 8 options:


A)
2700 N


B)
2646 N


C)
432 N


D)
168.75 N
Question 9 (5 points)

The acceleration of gravity is a constant equal to _______ meters per second squared.
Question 9 options:


A)
7.6


B)
10.2


C)
9.8


D)
8.4
Question 10 (5 points)

What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2?
Question 10 options:


A)
23 N


B)
23 kg


C)
1.875 kg


D)
120 N

Answer 1

1. B
2. C
3. B
4. D
5. D
6. C
7. D
8. C
9. C
10. D