Question

Please Help test is worth a lot !!!

Answer 1

Answer:

3.667m/s

Explanation:

Momentum = mass * speed.

Momentum before (A+B) = momentum after (A+B)

$m_{a}u_{a}+m_{b}u_{b}=m_{a}v_{a}+m_{b}v_{b}$

100*4 + 150*0 = 100(-1.5) + 150v$_{b}$

400 = -150 + 150v$_{b}$

150v$_{b}$ = 550

v$_{b}$=3.667m/s