An object dropped from peak of a tower takes 2 second to cross half its height. The height of the tower will be : (If g = 9-8 m/s2)
A. 9.8m
B. 19.6m
C. 20m
D. 39.2m.
Answer:D
An object dropped from peak of a tower takes 2 second to cross half its height. The height of the tower will be : (If g = 9-8 m/s2)
A. 9.8m B. 19.6m C. 20m D. 39.2m.