Saved Bookmarks
| 1. |
a body dropped freely from a certain height reaches the ground in t swconds then the average velocity during the free fall is |
|
Answer» ong>Explanation: DISPLACEMENT be s m. time = t s s = UT + 1/2 × g × t^2 => s = 0 + 1/2 × 9.8 × t^2 => s = 4.9 t ^2 so avg velocity = total displacement ÷ total time = 4.9 t^2 / t = 4.9 t m/s |
|