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

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

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Thạch Thảo 4 years 2021-07-26T23:29:27+00:00 1 Answers 49 views 0

Answers ( )

  1. Neala
    0
    2021-07-26T23:31:25+00:00
    Reply

    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

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