Question

two spheres of masses 20 g and 40 g moving in a straight line in the same direction with velocities 3m/s and 2m/s respectively. they collide with each other and after the collision, the sphere of mass 20g moves with a velocity of 2.5 miles. Find the velocity of second ball after collision
plz answer fast​

Answer 1

Answer :

★ For sphere A

• Mass = 20 g
• Initial velocity = 3 m/s
• Final velocity = 2.5 m/s

★ For sphere B

• Mass = 40 g
• Initial velocity = 2 m/s

We have to find final velocity of sphere B after collision$.$

Since no external force acts on the system of sphere, momentum of whole system is conserved.

Initial momentum of system will be equal to the final momentum of system.

Momentum is measured as the product of mass and velocity.

• P = m × v

➠ P (initial) = P (final)

➠ m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

➠ 20(3) + 40(2) = 20(2.5) + 40v₂

➠ 60 + 80 = 50 + 40v₂

➠ 40v₂ = 90

➠ v₂ = 2.25 m/s

Answer 2

Answer:

@magical wizard tumne m¹v¹ me 2.5 m/s kqise liya..