velocity=displacement/time
displacement=∆velocity x ∆time
displacement=4x4
16m
Answer:
The angular frequencies of all the 3 pendulums shall be same.
Explanation:
The time period of a simple pendulum with the approximation
is given by:

The angular frequency
is given by

As we can see that the angular frequency is independent on the initial angle (valid strictly for small angle approximations) we conclude that the angular frequencies of the 3 pendulums are the same.
B; to produce a hypothesis.
Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it ha