A) 300m
B) 400m
C) 150m
D) 75m
Correct Answer: D
Solution :
From equation of motion \[v=u+at\] Given, \[v=20\,m/s,\,u=10\,m/s,\,t=5\,s\] \[\therefore \] \[a=\frac{10}{5}=2\,m/{{s}^{2}}\] Also, \[{{v}^{2}}={{u}^{2}}+2as\] \[{{(20)}^{2}}={{(10)}^{2}}+2\times 2s\] \[\Rightarrow \] \[s=\frac{300}{4}=75\,m\]
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