Answer:
folk dancing is old music and ball room is young dancing
The correct answers are: Options 2,4 and, 5
2)He solved Ptolemy’s model by proving elliptical orbits.
4)He determined that planets move faster when closer to the Sun.
5)He discovered laws of planetary motion.
Answer:
Explanation:
Conceptual analysis
To solve this problem we apply Newton's second law:
The acceleration of an object is proportional to the force F acting on it and inversely proportional to its mass m.
a = F / m
Where,
F = m * a Formula (1)
F: Force in Newtons (N)
m: mass in kg
a: acceleration in m/(s^2)
a = v / t Formula (2)
v: speed in m/s
t: time in seconds (s)
Known information
We know the following data:
m = 1kg
v = 1 m/s
t = 1s
Development of the problem:
In the Formula (2): 
In the Formula (1): 
According to the First Law of Motion or Law of Inertia, Inertia is the tendency for an object to resist change in its velocity. If you look at your scenario you have a full water bottle on a desk and a football player running with the ball. The water bottle is at REST because is not moving while the football player is IN MOTION, because he is running.
Now the question is would it be easier to make the water bottle move or to make the football player stop?
It is easier to make the bottle move than stop the football player. Since the running football player shows more resistance to a change in its motion, then it has more inertia.
