Projectile Is shot upward from the surface of Earth with an initial velocity of 136 meters per second. Use the position
function below for free-falling objects. What is its velocity after 3 seconds? After 15 seconds? (Round your answers to one
decimal place.)

s(t) = -4.9t^2 + V0t + S0.

3s =
15s =

,

Step-by-step explanation:

The velocity function of the projectile is obtained by deriving the position function:

Now, the velocities after 3 and 15 seconds are, respectively:

the answer to this question is in the pic

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".