A single concave spherical mirror produces an image which is ...

[Sportsfan2111]

A single concave spherical mirror produces an image which is
 
  A)
 
  always virtual.
  B)
 
  always imaginary.
  C)
 
  always real.
  D)
 
  real only if the object distance is less than f.
  E)
 
  real only if the object distance is greater than f.

Question 2

The velocity of an object as a function of time is given by v(t) = -3.0 m/s - (2.0 m/s2 ) t + (1.0 m/s3 ) t2. Determine the instantaneous acceleration at time t = 2.00 s.
 
  A)
 
  -5.0 m/s2
 
  B)
 
  2.0 m/s2
 
  C)
 
  -18 m/s2
 
  D)
 
  -3.0 m/s2
 
  E)
 
  18 m/s2

[mjbamaung]

Answer to Question 1

E

Answer to Question 2

B

[Sportsfan2111]

Thank you!

[mjbamaung]

Always glad to help...