Integrated Concepts A 90.0 -kg ice hockey player hits a 0.150-kg puck, giving the puck a velocit

Name: Problem 52, Chapter 8: College Physics for AP® Courses
Uploaded: 2019-08-25T19:57:45-08:00
Duration: 2 min 55 s
Channel: Kristela Garcia
Description: Integrated Concepts A 90.0 -kg ice hockey player hits a 0.150-kg puck, giving the puck a velocity of 45.0 m / s . If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal 15.0 m away?

step 1 In this problem, we have a hockey player that's going to hit a puck. Initially, they are both at

Question

Integrated Concepts A 90.0 -kg ice hockey player hits a $0.150-\mathrm{kg}$ puck, giving the puck a velocity of 45.0 $\mathrm{m} / \mathrm{s}$ . If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal 15.0 $\mathrm{m}$ away?

   Integrated Concepts
A 90.0 -kg ice hockey player hits a $0.150-\mathrm{kg}$ puck, giving the puck a velocity of 45.0 $\mathrm{m} / \mathrm{s}$ . If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal 15.0 $\mathrm{m}$ away?

College Physics for AP® Courses

Irina Lyublinskaya,…

Chapter 8, Problem 52

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Solved by Expert Kristela Garcia

08/25/2019

Step 1

The total momentum before the hit is equal to the total momentum after the hit. Since both the player and the puck are initially at rest, the total initial momentum is zero. After the hit, the player recoils and the puck moves forward. So, we have: \[0 = Show more…

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Integrated Concepts A 90.0 -kg ice hockey player hits a $0.150-\mathrm{kg}$ puck, giving the puck a velocity of 45.0 $\mathrm{m} / \mathrm{s}$ . If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal 15.0 $\mathrm{m}$ away?

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Key Concepts

Conservation of Momentum

In an isolated system with no external forces, the total momentum remains constant. This principle means that when two objects interact, such as through a collision or push, the momentum gained by one object must equal the momentum lost by the other, ensuring that the overall momentum of the system does not change.

Kinematics

Kinematics is the branch of mechanics that deals with the motion of objects without referring to the forces that cause the motion. It includes the study of relationships between displacement, velocity, and time, which is essential for determining parameters like the distance traveled or time taken when the motion is uniform or accelerated.

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