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Answer:
Option D
Explanation:
u=5m/s
a= -10m/s^2
v=0
v=u+a*t
0=5-10*t
10t=5
t=0.5s
s=ut+1/2at^2
s=5*0.5+1/2*(-10)*0.5*0.5
s=2.5-1.25
s=1.25
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Explanation:
initial velocity=5m/s and final=0
acceleration=-10m/s^2
v-u/t=a
t=v-u/a
=-5/-10=0.5second
by second kinematical equation,
s=ut+1/2at^2
=5×0.5+1/2×-10×0.5^2
=2.5-1.25
=1.25 m
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