In the figure acceleration of bodies A, B and C are shown with directions. Values b and c are w.r.t. ground whereas a is acceleration of block A w.r.t. sedge C. Acceleration of block A w.r.t. ground is

\[\sqrt{{{\left( b+c \right)}^{2}}+{{c}^{2}}+2\left( b+c \right).c.\cos \theta }\]

\[\sqrt{{{\left( b+c \right)}^{2}}+{{a}^{2}}}\]

\[c-\left( a+b \right)\cos \theta \]

\[\sqrt{{{\left( b+c \right)}^{2}}+{{c}^{2}}-2\left( b+c \right).c.\cos \theta }\]

In the figure acceleration of bodies A, B and C are shown with directi

1.	In the figure acceleration of bodies A, B and C are shown with directions. Values b and c are w.r.t. ground whereas a is acceleration of block A w.r.t. sedge C. Acceleration of block A w.r.t. ground is
A.	\[\sqrt{{{\left( b+c \right)}^{2}}+{{a}^{2}}}\]
B.	\[c-\left( a+b \right)\cos \theta \]
C.	\[\sqrt{{{\left( b+c \right)}^{2}}+{{c}^{2}}-2\left( b+c \right).c.\cos \theta }\]
D.	\[\sqrt{{{\left( b+c \right)}^{2}}+{{c}^{2}}+2\left( b+c \right).c.\cos \theta }\]
Answer» D. \[\sqrt{{{\left( b+c \right)}^{2}}+{{c}^{2}}+2\left( b+c \right).c.\cos \theta }\]