Question

What is the other name of Galileo's law of falling bodies?
A. Law of motion
B. Newton’s first law
C. Newton’s second law
D. Newton’s third law

Answer 1

Hint: At first we need to understand what statement Galileo gave and what is the concept and reason behind it. Now we need to compare that with the three laws of motion given by Newton, then we can find what is the other name of Galileo’s law of falling bodies.

Complete step by step answer:
To understand what is the other name for Galileo’s law of falling bodies we at first have to know about what is Galileo’s law.
Scientists at first used to think that force is the cause of speed.
Now Galileo showed that acceleration is caused by a force which in turn gives speed to a body.
On the basis of the law of parabolic fall, Galileo said that the force of gravity which causes all bodies to move downward and the fall of a body on the surface of the earth at a constant acceleration is actually a constant force. In other words, we can say that a constant force does not lead to constant speed but it leads a body to a constant acceleration.
Now later scientists found that a body will continue to remain in a state of motion as long as no factors disturb it.
Now, let us see that what Newton’s second law of motion says,
Newton’s second law of motion said that the acceleration of an object is totally dependent upon two factors that is the net force acting upon the object and the mass of the object.
So, by comparing the statement given by Galileo and then Newton’s second law of motion we can say that Galileo’s law of falling bodies can also be said as Newton’s second law of motion.
So, option C, that is Newton’s second law, is the correct option.

Note:
Newton’s first law of motion says that every object will stay at rest or in a state of motion until and unless an external force is applied to it. In Newton’s second law of motion, he said that force is directly proportional to the acceleration and mass of the body, and in Newton’s second law of motion it is said that to every action there is always an equal and opposite reaction. Students must have a clear concept of what is Galileo’s law of falling bodies. Students need to understand what is the actual concept behind it.