An object is dropped without initial speed from a height of 20 m above ground and falls
with a constant acceleration of 10 m. s-2.
a. How long does it take the object to
reach the ground?
b. What is its speed upon reaching
ground?

a. t = 2 s

b. vf = 20 m/s

Explanation:

a.

We can the second equation of motion to find out the time to reach the ground:

where,

h = height = 20 m

vi = initial velocity = 0 m/s

t = time taken to reach the ground = ?

a = acceleration = 10 m/s²

Therefore,

t = 2 s

b.

Here, we will use the first equation of motion to find the final speed:

vf = 20 m/s

your answer is c! hope this : )

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation