The distance travelled by a falling body in the last second of its motion, to that in the last but one second is 7 : 5, the velocity with which body strikes the ground is

The distance travelled by a falling body in the last second of its mot

1.	The distance travelled by a falling body in the last second of its motion, to that in the last but one second is 7 : 5, the velocity with which body strikes the ground is
Answer» 19.6 m/s 39.2 m/s 29.4 m/s 49 m/s ANSWER :B