The position of an object is given as a function of time as x(t) ...

[NguyenJ]

The position of an object is given as a function of time as x(t) = (3.00 m/s)t + (2.00 m/s2)t2. What is the displacement of the object between t = 4.00 s and t = 5.00 s?
 
  A)
 
  8.00 m
 
  B)
 
  5.00 m
 
  C)
 
  21.0 m
 
  D)
 
  65.0 m
 
  E)
 
  44.0 m

Question 2

A beam of light is moving in the same direction as an object is traveling. If the object is moving at speed 0.70 c, how fast is the light moving as it passes the object?
 
  A)
 
  c
  B)
 
  1.35 c
  C)
 
  1.40 c
  D)
 
  0.3 c
  E)
 
  1.70 c

[maaaaaaaaaa]

Answer to Question 1

C

Answer to Question 2

A

[NguyenJ]

Gracias!

[kishoreddi]

Excellent