a2kg hockey puck is sliding across the frictionless ice at 6m/s.how much force is required to keep it moving at 6m/s
To determine the amount of force required to keep a hockey puck moving at a constant speed of 6 m/s on a frictionless ice surface, we need to consider Newton's first law of motion, also known as the law of inertia.
According to Newton's first law, an object will continue to move at a constant velocity unless acted upon by an external force. In this case, since there is no friction or opposing forces acting on the hockey puck, the force required to keep it moving at a constant speed of 6 m/s is zero.
In a frictionless environment, once the hockey puck is set in motion with an initial force, it will continue to move at a constant velocity without any additional force being applied. No further force is required to maintain its speed.
Therefore, the force required to keep the hockey puck moving at 6 m/s on a frictionless ice surface is zero.
1 Newton's Law:
Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
... Without friction this object will move by inertia.