A hockey puck slides on ice at constant velocity. What is the netforce acting on the puck?
A. Depends on the speed of the puck.
B. More than itsweight.
C. Equal to itsweight.
D. Zero.
E. Less than its weight but more than zero.
The Correct Answer is D. Zero.
Assuming ice means it is frictionless and there is no airresistance, the net force must be equal to zero.
f=ma
If the net force did not equal zero the puck would be accelerating...not going at a constant velocity.