a body falls from rest ,it's velocity at the end of first second is?(g=32ft/sec)
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This problem can be solved with the help of kinematics in the following procedure:-
v² = u² + 2as
v = u + at
s = ut + 0.5at²
In the above equation,
v = final velocity
u = initial velocity
s = displacement
a = acceleration
t = time
As per given problem.,
u = 0 m/s
t = 1 s
a = g = 9.8 m/s²
Thus,
v = u + gt
v = 0 + (9.8)(1)
v = 9.8 m/s
v² = u² + 2as
v = u + at
s = ut + 0.5at²
In the above equation,
v = final velocity
u = initial velocity
s = displacement
a = acceleration
t = time
As per given problem.,
u = 0 m/s
t = 1 s
a = g = 9.8 m/s²
Thus,
v = u + gt
v = 0 + (9.8)(1)
v = 9.8 m/s
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