A ball is in free fall after being dropped. What willthe speed of the ball be after 2 seconds of free fall?

So, the speed of the ball after 2 seconds after free fall is 20 m/s.

Hi ! I'm Deva from Indonesia. In this material, we can call this event "Free Fall Motion". There are two conditions for free fall motion, namely falling (from top to bottom) and free (without initial velocity). Because the question only asks for the final velocity of the ball, in fact, we may use the formula for the relationship between acceleration and change in velocity and time. In general, this relationship can be expressed in the following equation :

With the following conditions :

We know that :

What was asked :

Step by step :

So, the speed of the ball after 2 seconds after free fall is 20 m/s.

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

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