a particle moves along of the x_axis according to the equation X=2t+3t^2, whare x is in m and t is in second. calcualt the instantaneous velocity and the instantaneous acceleration in t=3s​

Instantaneous velocity   meter per second

Instantaneous acceleration   meter per second square

Explanation:

Given equation of distance X =

Instantaneous velocity  

Substituting the value of t = 3 seconds, we get -

meter per second

Instantaneous acceleration     meter per second square

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.