Question

An 160.0 g hockey puck slides along an essentially frictionless ice rink with speed 4.70 m/s....

An 160.0 g hockey puck slides along an essentially frictionless ice rink with speed 4.70 m/s. A hockey player uses her stick to do –1.20 J of work on the puck. What is the puck's speed after she has done this work? A. 0 m/s B. 2.66 m/s C. 3.50 m/s D. 4.53 m/s

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Answer #1

When the 160g puck moves withh speed 4.7m/s,its kinetic energy ,

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After the hockey player do the work,Kinetic energy becomes

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New speed

ANSWER: Option B.2.66m/s

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