A hockey player sends a hockey puck flying across the ice. Newton's 1st law says that an object in motion must remain in motion, but the hockey puck will eventually come to a stop. What is the best explanation for this contradiction?

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Kelton Eaton

Physics

27 May, 08:26

A hockey player sends a hockey puck flying across the ice. Newton's 1st law says that an object in motion must remain in motion, but the hockey puck will eventually come to a stop. What is the best explanation for this contradiction?

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Titan · Answer 1

according to newton's first law, an object maintains its state of rest or motion unless acted upon by an external force. So a force is required to stop an object at rest and a force is also required to move an object at rest.

when the hockey player send a hockey puck flying across the ice, frictional force from the ice surface acts on the puck in opposite direction of the motion of puck to slow it down and stops it finally.