A) \[12\,m{{s}^{-2}}\] in north direction
B) \[3\,m{{s}^{-2}}\]in north direction
C) 15ms 2 in north direction
D) \[3\,m{{s}^{-2}}\]in south direction
Correct Answer: B
Solution :
Key Idea: Rate of change of velocity is defined as acceleration. Acceleration \[a=\frac{\Delta v}{\Delta t}=\frac{{{v}_{2}}-{{v}_{1}}}{\Delta t}\] Given, \[{{v}_{1}}=10\,m/s,\,{{v}_{2}}=25\,m{{s}^{-1}},\Delta t=5s\] \[\therefore \]\[a=\frac{25-10}{5}=3\,m{{s}^{-2}}\]in north direction.
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