Question

a 3 kg block moving to the right at 5m/s makes a perfectly elastic collision with a 1.5kg block moving to the right at 4m/s . what is the velocities after collision

Answer 1

Answer:

2.2,3.4

Momentum conservation,

3×4+4×2=3v

1

+4v

2

20=3v

1

+4v

2

e=

2

v

2

−v

1

v

2

−v

1

=1.2

7v

2

=23.6

v

2

=3.4m/s

v

1

=2.2m/s