Question

19. Find the recoil velocity of a 65 kg ice hockey goalie who
catches a 0.15 kg hockey puck slapped at him at a
velocity of 50 m/s. Assume that the goalie is at rest
before catching the puck, and friction between the ice
and the puck-goalie system is negligible.
a. -0.12 m/s
b. O m/s
C. 0.12 m/s
d. 7.5 m/s

Answer 1

Answer:

c. 0.12 m/s

Explanation:

by using momentum formula $v_2=\frac{m_1\times v_1}{m_1+m_2}$

we get

$v_2=\frac{0.15\times 50}{0.15+65}=0.12$