Question

Two cars A and B are moving towards each other on a horizontal surface. The car A has mass 60 g and moves towards the right with speed 60 cm/s. The car B has a mass of 100 g and moves towards the left with a speed of 20 m/s. The two cars collide and get stuck to each other. With what velocity will they move after the collision?

Answer 1

@mathslover @igbasallote @ghazi

Answer 2

@sauravshakya @UnkleRhaukus @ganeshie8

Answer 3

@Ishaan94

Answer 4

use conservation of momentum

Answer 5

@hartnn

Answer 6

ok!! then

Answer 7

write the equation for conservation of momentum first

Answer 8

momentum before collision = momentum after collision

Answer 9

m1*v1+m2v2= m1vf+m2vf

Answer 10

that is m1v1+m2v2=(m1+m2)vf

Answer 11

no, but m1*u1+m2+u2=m1v1+m2v2 @ghazi

Answer 12

\[0.060*0.6+0.1100*20=(60+100)*V _{f}\] dude go for the equation of perfectly inelastic collision ...and then solve this problem

Answer 13

didn't you see in your question...that two body were moving together

Answer 14

sry...

Answer 15

then

Answer 16

just solve the above equation

Answer 17

@ghazi answer is in cm/s

Answer 18

plz solve this eq. plz @ghazi plz.....

Answer 19

okayy..convert that into cm

Answer 20

yaa..

Answer 21

plz solve

Answer 22

ok thanx...

Answer 23

@ghazi thnx fr help

Answer 24

\[(0.060*60+0.100*200)= (100)*V _{f}.....V _{f}=\frac{ 3.60+20 }{ 0.100 }=236 cm/s\]

Answer 25

no, answer is 10 cm/s

Answer 26

there must be some miscalculation but this is the equation that will be used...i might have done some wrong conversion ...

Answer 27

ok

Answer 28

m_A v_A + m_b B v_B = Momentum after collision