Question

A man is marooned at rest on level frictionless ice. In desperation, he hurls his shoe to the right at 4.1m/s. If the man weighs 385 N and the shoe weighs 2.1N, the man moves to the left with a speed of...

Answer 1

$F_1v_1=F_2v_2,$

$v_2=v_1\frac{F_1}{F_2}=2.2~\frac{cm}s.$