The Space Time Diagram in Figure R2 $t=4 \mathrm{~s}$ ?

A) a
B) B
C) C
D) D

Multiple Choice

The space time diagram in figure R2.12 shows the world lines of various objects. Which object has the largest speed at time $t=4 \mathrm{~s}$ ?

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