Erica (35 kg ) and Danny (44 kg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is mov
ing upward past her at 4.9 m/s . At that instant he grabs hold of her.
1 answer:
Answer:
v= 2.66 m/sec
Step-by-step explanation:
supposing we have to find their speed just as he grabs her.
Applying law of conservation of Energy
That is
p_i= p_f
Initial momentum = p_i = 35×0+ 44×4.9= 210.6 kg.m/sec.
final momentum p_f= (35+44)v
let the final velocity of combined body be v
therefore,
79v= 210.6
v= 2.66 m/sec.
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