Question

129. A body is dropped from a height 135 m. If
after 3 sec acceleration due to gravity of
earth cases to act then the further time of
descent is (g = 10 m/s)
(3 sec
(2) 6 sec
(3) 4 sec
(4) 2 sec​

Answer 1

Answer:

3

Explanation:

after 3s

position =135-10*3*3*.5

=90

velocity=at

=30

s=vt

time=90/30

Answer 2

Answer:

3

Explanation:

After 3 s

position is 135-10*3*3*5 =90.

Velocity =at

30

s = vt

Time = 90/30