A hockey puck is seen moving north over a frozen pond at a speed of 2m/sec.A while later it is seen moving west at 2m/sec.Which of the following correctly describes the forces acting on the puck?
A) A force has acted,since the direction has changed
B) No force has acted,since the speed is the same
C) A force has acted,but only in a northward direction
D) The above information is insufficient to tell if forces have acted
Correct Answer:
Verified
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