Are the Final Velocities of Two Blocks After an Elastic Collision Correct?

[phunphysics2]

Greetings Fellow Physics lovers!

I was wondering if somebody could please check my work on this problem.

A 5 kg block traveling at 10 m/s collides into a stationary 2 kg block. Find the final velocities of the two blocks after the elastic collision.



V1f=(m1-m2)/(m1+m2) (V1i)

V2f= (2m1)/(m1+m2) (v1i)



V1f=(5-2)((5+2) (10) = 4.28 m/s

V2f=2(5)/(7) (10)= 14.29 m/s


Thanks for your help!

 

[ehild]

Greetings Fellow Physics lovers!

I was wondering if somebody could please check my work on this problem.

A 5 kg block traveling at 10 m/s collides into a stationary 2 kg block. Find the final velocities of the two blocks after the elastic collision.



V1f=(m1-m2)/(m1+m2) (V1i)

V2f= (2m1)/(m1+m2) (v1i)



V1f=(5-2)((5+2) (10) = 4.28 m/s

V2f=2(5)/(7) (10)= 14.29 m/s


Thanks for your help!

It is correct, except the typing error of "(" instead of "/".

ehild