A) 30
B) 40
C) 50
D) 60
Correct Answer: D
Solution :
\[v_{r}^{2}=v_{m}^{2}-{{v}^{2}}\] \[v=\frac{320}{4}\text{m/min=80m/min}\] \[{{v}_{m}}=\frac{5}{3}v\], \[v_{r}^{2}=t\frac{5}{3}{{({{v}_{r}})}^{2}}-{{(80)}^{2}}\] \[\frac{16}{9}v_{r}^{2}={{(80)}^{2}}\] \[{{v}_{r}}=60\text{m/min}\] \[{{u}^{2}},\,\,{{u}_{0}}\]form canours linearYou need to login to perform this action.
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