Question

Car A of mass 1500 kg travelling at 25 m/s collides with another car B of mass 1000 kg travelling at 15 m/s in the same direction. After collision, the velocity of car A becomes 20 m/s. Calculate the velocity of car B after collision...................................I WILL MARK AS BRAINLIEST

Answer 1

Answer:

Heya friend,

Here is the answer-

Note-

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.