An object is dropped from 42m tall building. how long does it take to reach the ground?

It takes 2.93 s for the object to reach ground from the height of 42 m.

Explanation:

Given:

Displacement of the object is,

As it is dropped, initial velocity of the object is,

Acceleration of the object is equal to acceleration due to gravity and is equal to,

Now, using Newton's equation of motion and plugging in the values, we get:

So, it takes 2.93 s for the object to reach ground from the height of 42 m.

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

where’s the list ? the question is incomplete