Suppose that as an object falls from the top of a cliff, its position in feet above the ground after t seconds is given by s(t) = 160-16t^2. find the average velocity from t=1to t=1+h seconds, where h not= 0.

a.32+16h

b.-32-16h

c.32-16h

d.-32+16h

Explanation:

Velocity is defined as the variation of the position of an object in time :

 (1)

In this case we are given the position above the ground of an object after t seconds by:

  (2)

When :

  (3)

When :

  (4)

  (5)

Calculating :

 (6)

 (7)

Calculating :

(8)

Substituting (7) and (8) in (1):

 (9)

Finally:

answer: a. same unit

explanation: