Saved Bookmarks
| 1. |
Two cars start off to race with velocities `4 m/s and 2 m/s` and travel in straight line with uniform accelerations `1 msec^-2`and 2 msec−2` respectively. If they reach the final point at the same instant, then the length of the path is.A. `30m`B. `32m`C. `20m`D. `24m` |
|
Answer» Correct Answer - D Two cars ……………. `s=4t+(1)/(2)(1)t^(2)=2t+(1)/(2)t^(2)` `implies 4t+0.5t^(2)=2t+t^(2)` solving we get `t = 0 and t = 4 sec` so, `s = (4xx4)+0.5(4xx4)` , `s = 24m` |
|