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aakar of prakar of mass 1500 kg travelling at 25 metre per second collides with another copy of mass 1000 kg travelling at 15 metre per second in the same direction out replies in the velocity of car in becomes 20 metre per second calculate the velocity of car B

Posted by Ayush Rawat 4 years ago

CBSE > Class 09 > Science

1 answers

Tanu Prajapati 4 years ago

m=mass u=initial velocity v= final velocity Now, m1= 1500kg m2=1000kg u1=25m/s u2=15m/s v1=20m/s v2=? Formula m1u1+m2u2= m1v1+m2+v2 1500*25+1000*15= 1500*20+1000*v2 37500+15000=30000+1000v2 52500=30000+1000v2 52500-3000=1000v2 22500=1000v2 22500/1000=v2 v2= 22.5m/s Thus, velocity of car 'B' after collision is 22.5m/s.

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