Answer :
u=0m/s, t=4sec, a=9m/s^2 (acceleration due to gravity )s=ut+1/2at^2=0×4+1/2×9×4×4=72m,
1/4of72=18m
Now, s=18m, u=0m/s, a=9m/s^2
s=ut+1/2at^2=>18=0×t+1/2×9×t^2=>18=1/2×9t^2=>t^2=2×2, hence, t=2
s = u t + 1/2 a t²
a = g Sin Ф, where Ф = angle of the inclined plane
u = 0
Hence, s is directly proportional to t². If distance is 1/4 th then time taken will be 1/2.
So half of 4 secs is 2 seconds.
a = g Sin Ф, where Ф = angle of the inclined plane
u = 0
Hence, s is directly proportional to t². If distance is 1/4 th then time taken will be 1/2.
So half of 4 secs is 2 seconds.