Erica (37kg ) and Danny (49kg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is moving upward past her at 4.9m/s . At that instant he grabs hold of her.
Momentum before = momentum after
Erica’s momentum = 0
Danny momentum = 49 kg * 4.9 m/s = 240.1 kg-m/s
240.1 + 0 = (37 + 49) kg * V
86 V = 240.1
V = 2.79 m/s