Find the velocity of object when t = 3.

Question

Use the position function s (t) = -4.9 t² + 200, which gives the height (in meters) of an object that has fallen from a height of 200 meters. The velocity at time t = a seconds is given by

Find the velocity of object when t = 3.

Answer 1

Step 1 :

The position function is .

Where height of the object .

The velocity of the object .

Step 2 :

Where time, .

The velocity of object when is given by,

Thus, the velocity of object when is .

Solution :

The velocity of object when is .