Concept explainers
The speed with which a hockey puck head towards the goal.
Answer to Problem 54A
Explanation of Solution
Given:
The mass of the puck,
Since initially the puck was at rest, thus initial velocity of the puck is
Force exerted on the puck,
Time taken,
Formula used:
Momentum of an object of mass m and moving with velocity v is given by,
Impulse on an object is equal to the change in momentum of an object,
where
Calculation:
Let the speed with which the puck head towards the goal, that is the final velocity of the puck be
Using all the given values in the formula mentioned above, the final velocity on the puck will be,
Conclusion:
Thus, the speed with which the puck head towards the goal is
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