The power of an engine is the derivative of the work that it performs with respect to time. Suppose an engine outputs work modeled by the function 311(5) = 93 where Wis power in Joules and tis time in seconds. Which equation represents its power at a given time f? O A. Pa) = 2x3 O B. P(:)- 2x 0 C. P()- 3x 0 D. P(t) =3 Acceleration is the change in velocity per unit time. Isabella says that it is possible for an object in motion to have no acceleration. Which of the following functions describes a moving object experiencing no acceleration? O A. v(:)=t2t O B. v(t)-U:'+u: O C. v(z)=t O D. v(:)-2 A scientist recorded the movement of an eagle and modeled it with the function IQ) = 2:2 where x is in miles and tie in hours. What was the eagle's average velocity between times t= 5 and t: 7? O A. 24 mph 0 B. 74 mph 0 C. 98 mph 0 D. 148 mph