solve the question........i need full solution
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Heya !!
u = 0
time(1) = t1
we know v = u + at
In first case
v = at
t = v/a
or t1 = v/a1
acceleration (1) = a1
time(2) = t2
acceleration(2) = -a2
in the second case :
t2 = v /-a2
t1/t2
= -a2 / a1
u = 0
time(1) = t1
we know v = u + at
In first case
v = at
t = v/a
or t1 = v/a1
acceleration (1) = a1
time(2) = t2
acceleration(2) = -a2
in the second case :
t2 = v /-a2
t1/t2
= -a2 / a1
TheEdward:
negative sign represent direction
as acceleration is a vector quantity
direction of retardation is opposite to positive acceleration before breaks which is negative
but if I have to tick the correct answer then
a2/a1 or -a2/a1
is -a2/a1 in the options ?
no but if it is given then
It must be there
if it isn't tick the a2/a1
okk and thanx
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