A girl dropped her doll from a height of 10 M accidently.it strikes to the ground with some velocity. find the velocity at the time of strike to the ground, if it took 2 seconds to strike to ground.
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Answered by
3
V=10/2=5m/s..... Thats alllllllns
Answered by
7
As per third eqn of motion,
v2=u2+2as
u=0 [Since body starts from rest]
a=g=9.8 m/s2
S=displacement=100
v2=0 + 2x9.8x100
v2 = 1960
v = sqr root of 1960 = 44.272 m/s
Hope it helps :]
Answer may vary a little if g is taken 10 m/s2 instead of 9.8 m/s2
v2=u2+2as
u=0 [Since body starts from rest]
a=g=9.8 m/s2
S=displacement=100
v2=0 + 2x9.8x100
v2 = 1960
v = sqr root of 1960 = 44.272 m/s
Hope it helps :]
Answer may vary a little if g is taken 10 m/s2 instead of 9.8 m/s2
sumit7861:
thank you bro
Np
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