Monday

December 22, 2014

December 22, 2014

Posted by **M** on Monday, July 9, 2012 at 7:22pm.

- Physics -
**bobpursley**, Monday, July 9, 2012 at 9:30pmYou have to use two equations:

conservation of momentum

a*Va+b*Vb=aVa'+bVb'

solve for Va'

Va'=(a*Va+b*Vb-bVb')/a

Now put that expression for va' into the conservation of momentum

1/2 aVa^2+1/2bVb^2=1/2a**Va'^2**+1/2 b Vb'^2

and then start solving for Vb'

A bit of algebra will be required. Then go back an solve for Va'

- Physics -
**Sophia**, Tuesday, July 10, 2012 at 12:08amHow exactly are you supposed to use the second equation to solve for Vb' if you don't know Va'^2?

- Physics -
**Elena**, Tuesday, July 10, 2012 at 5:10amm1=8.8 kg, v1=4.5 m/s

m2=0.5 kg, v2=0

u1=?

u1= (m1-m2)v1/)m1+m2),

u2=2m1v1/(m1+m2).

- Physics -
**ajayb**, Tuesday, July 10, 2012 at 8:07amIn the case of completely elastic collision, not only momentum is conserved but KE is also conserved. Considering these two principles, you get two equations from which you can find V1 and V2 in terms m1,m2 and U1.

**Answer this Question**

**Related Questions**

physics - An object(A) of mass 0.2kg strikes a second object (B) of mass 0.35kg ...

Physics - Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two...

Physics - Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two...

Physics- 2D Collisions - nitially, mass one (2.10 kg) has a velocity of 5.90 m/s...

Physics - Consider a perfectly elastic collision between two objects of equal ...

Physics - A 2.0 kg mass is moving to the right at 3.0 m/s . A 4.0 kg mass is ...

physics - two balls collide in a head on elastic collision and rebound in ...

Physics - Center of Mass - A baseball player uses a bat with mass mbat to hit a ...

physics - Two masses are involved in an elastic collision. The first has a mass ...

physics - Object A, which has mass m and a velocity Voi,collides with the Object...