Question

A body falls freely from res. Find
a. its downward acceleration
b. The height it falls in 6sec.
c.its speed after falling 140m.
d. The time required to reach its speed upon 50m/s
e. The time taken to fall 600m.

Answer 1

g that is 9.8
h=ut+1/2at.t
h=0+1/2 ×9.8×36=176.4
v-u=at
v×v=2ah
v=sqare root of 2×9.8×140=52
v-0=a×t
50=9.8×t
t=5.1
600=1/2 a t2
600×2/9.8=t2
t=11sec