Barrons AP Calculus

(D)

(E)

22. 
    

    (A)
    (B)
    (C)
    (D)
    (E)

    
    


23. 
    

    (A)
    (B)
    (C)
    (D)
    (E)

    
    


24. 
    

(A)

(B)

(C)

(D)

(E)

(A)

(B)

(C)

(D)

(E)

t   <   1   or  t >     2

t >     2

In Questions 22–24, a particle moves along a horizontal line and its position at
time t is s = t 4 − 6t 3 + 12 t 2 + 3.

The particle    is  at  rest    when    t   is  equal   to

1   or  2

0

0,  1,  or  2

0,  2,  or  3

The velocity,   v,  is  increasing  when

t >     1

1   <   t   <   2

t   <   2

t   <   1   or  t >     2

t >     0

The speed   of  the particle    is  increasing  for

0   <   t   <   1   or  t >     2

1   <   t   <   2

t   <   2

t   <   0   or  t >     2

t   <   0

The displacement    from    the origin  of  a   particle    moving  on  a   line    is  given

by  s   =   t   4   −   4t  3 . The maximum displacement    during  the time    interval    −2  

t   4   is

27

3

12 +    3

48

16