0.
no external force, momentum conserved.
Two particles of masses m1 and m2 in projectile motion have velocities v1 and v2 where velocities are vectors, at time t=0. They collide at time t, their velocities being v1' and v2' at time 2t. the value of modulus of (m1v1'+m2v2')-(m1v1+m2v2) is:
a)0
b)(m1+m2)gt
c)2(m1+m2)gt
d)(m1+m2)gt/2
-
UP 0 DOWN 0 0 8
8 Answers
Lokesh Verma
·2008-12-14 04:01:20
no sky!
mg is acting for that time.
for time 2t.
force acting is (m1+m2)g
Does this hint suffice?!
~AjInKyA~
·2008-12-14 04:42:55
mayb relative velocity b used !!
time is same for both . but r tey in opp or smae direction!!!!!!!?
is question komplet??
Aakash Sharawat
·2008-12-14 16:25:45
absolutely nishant's hint is correct! the correct answer as per the answer key is C!!!!!!!!!!
thanks for the hint mentor!!!!!!!!!!