Question

a body of mass 1500 kg and moving velocity is25m per sec and body b mass 1000 kg and velocity is 15m per sec they both collide same direction after collides body a moving velocity is 20m per sec body b velocity is?

Answer 1

m1u1+m2u2 =m1v1+m2v2

1500*25+1000*15=1500*20+m2v2
37500+15000=30000+m2v2
52500=30000+1000*v2
22500=1000v2
22.5=v2

If it is correct then tell me.

Answer 2

Given,

Mass of body A (m1) = 1500 Kg

Mass of body B (m2) = 1000 Kg

Velocity of body A before collision (v1) =25 m/s

Velocity of body B before collision (v2) =15 m/s

Velocity of body A after collision (u1) = 20 m/s

Now, Velocity of body B can be find by using a Formula I.e.,

=> m1v1 + m2v2 = m1u1 + m2u2

=> (1500 x 25) + (1000 x 15) = (1500 x 20) + (1000 x u2)

=> (37500) Kg m/s + (15000) Kg m/s = (30000) Kg m/s + 1000u2

=> (37500 + 15000) Kg m/s = 30000 Kg m/s + 1000u2

=> 52500 Kg m/s - 30000 Kg m/s = 1000u2

=> 22500 Kg m/s = 1000u2

=> u2 = (22500/1000) m/s

=> u2 = 22.5 m/s




Be Brainly