Question

an object is thrown vertically upwards and rises to a height of 45 metre then find the velocity with which it was thrown up , the time taken by the object to rech the highest point , total time for which the object remains in air

Answer 1

Answer:

Explanation:  formula is there i.e, u²/2g = h

                                      45 x 20 = u²

                         u= 30