Question

A hockey player hits the puck toward the net. Just after leaving his stick, the puck is traveling at 53 m/s. No other force acts on the hockey puck until it hits the net. Just before hitting the net, how fast is the hockey puck traveling?

Answer 1

Since no other forces act on the puck it will continue in a straight line without changing speed (Newtons first law) so it's still going 53m/s

Answer 2

53 m/s

Step-by-step explanation:

Newton's first law states that a body continues to be in state of rest or motion until it is acted upon an unbalanced external force. When a hockey player hits the puck, it moves with a velocity of 53 m/s. It will continue to move with same velocity until any other force acts on it. So, just before hitting the net, the hockey would be traveling with the same velocity = 53 m/s.