Question

the position function for a particular object is s(t) = -2t^2 +5t+20. which of these statements is true?
a. the velocity is constant.
b. the initial position is 5
c. the velocity at time t=1 is 1
d. the initial velocity is 20
e. none of these

Answer 1

\[\Delta s = vit + 1/2at^2\]

Answer 2

Are you familiar with that equation?

Answer 3

i'm not unfortunately

Answer 4

Velocity is constant means S'(t) = 0

Answer 5

wait wrong

Answer 6

Velocity is constant means that slope of the velocity is 0, or S''(t) = 0