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To a man running upwards on the hill, the rain appears to fall vertically downwards with `4 m s^-1`. The velocity vector of the man w.r.t. earth is `(2 hat i + 3 hat j) ms ^-1`. If the man starts running down the hill with the same speed, then determine the relative speed of the rain w.r.t. man. .A. `sqrt(10) m//s`B. `2sqrt(10) m//s`C. `sqrt(20) m//s`D. `2sqrt(20)m//s` |
| Answer» Correct Answer - C | |