pls solve these questions
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80..
when the body drops from height 2m and will reach the ground, its u=0..
v=?
v2-u2=2gh
v2=2*9.8*2= 4*9.8
now , this v is the initial velocity for calculating reatardation.
now,
final v=o
d= 10cm
from formula ....
v2-u2= 2as
=a=v2-u2/2s
=a =-196m/s2
when the body drops from height 2m and will reach the ground, its u=0..
v=?
v2-u2=2gh
v2=2*9.8*2= 4*9.8
now , this v is the initial velocity for calculating reatardation.
now,
final v=o
d= 10cm
from formula ....
v2-u2= 2as
=a=v2-u2/2s
=a =-196m/s2
PrakharSinha:
79 pls
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