question_answer

  An object is thrown vertically upwards and rises to a height of 10 m. Calculate (a) The velocity with which the object was thrown upwards. (b) The time taken by the object to reach the highest point.

Answer:

  Here distance travelled by the object in vertically upward direction's = h =10 m, final velocity of object, v = 0 and acceleration of the object, (a) If the initial velocity of projection be u, then from the relation we have                                                                                                                                                                                              (1) (b) If time taken by the object to reach the highest point be t, then from the relation.                                                                                                                                                                                (1)