Saved Bookmarks
| 1. |
Find the acceleration of an object at t= 3seconds if it's displacement is given by s=tcube + 4t |
|
Answer» :Displacement of OBJECT is given BYS = t³ + 4tWe have to FIND acceleration of object at t = 3s★ Instantaneous velocity :In order to find instantaneous velocity, we have to differentiate the displacement EQUATION with respect to time.➝ v = ds/dt➝ v = d(t³ + 4t)/dt➝ v = 3t² + 4★ Instantaneous acceleration :In order to find instantaneous acceleration, we have to differentiate the velocity equation with respect to time.➝ a = dv/dt➝ a = d(3t² + 4)/dt➝ a = 6tBy substituting t = 3, we get➝ a = 6(2)➝ a = 12 m/s² |
|