Two hockey pucks slide along a flat sheet of ice with no friction, and then collide with each other. The diagram below shows a top-down view of the colliding hockey pucks. The masses of the hockey pucks are mA = 2.00 kilograms (kg) and mB = 1.50 kg. Before the collision, puck A moves to the right at a speed of 2.50 meters per second (m/s) and puck moves to the left at a speed of 1.25 m/s. After the collision, puck A moves at a speed of 1.00 m/s at 50.0 degrees relative to the x axis. (a) Find find the final speed (in m/s) of puck B after the collision.   (b) Find find the direction of travel of puck B after the collision. Give your answer as an angle in degrees, measured relative to the x axis.   (c) What is the total change in kinetic energy of the hockey pucks during the collision, in units of Joules (J)?

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Two hockey pucks slide along a flat sheet of ice with no friction, and then collide with each other. The diagram below shows a top-down view of the colliding hockey pucks. The masses of the hockey pucks are mA = 2.00 kilograms (kg) and mB = 1.50 kg. Before the collision, puck A moves to the right at a speed of 2.50 meters per second (m/s) and puck moves to the left at a speed of 1.25 m/s. After the collision, puck A moves at a speed of 1.00 m/s at 50.0 degrees relative to the x axis.

(a) Find find the final speed (in m/s) of puck B after the collision.

 

(b) Find find the direction of travel of puck B after the collision. Give your answer as an angle in degrees, measured relative to the x axis.

 

(c) What is the total change in kinetic energy of the hockey pucks during the collision, in units of Joules (J)?

Problem 3
Two hockey pucks slide along a flat sheet of ice with no friction, and then collide with
each other. The diagram below shows a top-down view of the colliding hockey pucks.
The masses of the hockey pucks are ma = 2.00 kilograms (kg) and mB = 1.50 kg. Before
the collision, puck A moves to the right at a speed of 2.50 meters per second (m/s) and
puck moves to the left at a speed of 1.25 m/s. After the collision, puck A moves at a speed
of 1.00 m/s at 50.0 degrees relative to the x axis.
1.00
m/s
2.50
m/s
50.0°
A
1.25
m/s
A
before collision
after collision
(a) Find find the final speed (in m/s) of puck B after the collision.
Transcribed Image Text:Problem 3 Two hockey pucks slide along a flat sheet of ice with no friction, and then collide with each other. The diagram below shows a top-down view of the colliding hockey pucks. The masses of the hockey pucks are ma = 2.00 kilograms (kg) and mB = 1.50 kg. Before the collision, puck A moves to the right at a speed of 2.50 meters per second (m/s) and puck moves to the left at a speed of 1.25 m/s. After the collision, puck A moves at a speed of 1.00 m/s at 50.0 degrees relative to the x axis. 1.00 m/s 2.50 m/s 50.0° A 1.25 m/s A before collision after collision (a) Find find the final speed (in m/s) of puck B after the collision.
(b) Find find the direction of travel of puck B after the collision. Give your
answer as an angle in degrees, measured relative to the x axis.
(c) What is the total change in kinetic energy of the hockey pucks during the
collision, in units of Joules (J)?
Transcribed Image Text:(b) Find find the direction of travel of puck B after the collision. Give your answer as an angle in degrees, measured relative to the x axis. (c) What is the total change in kinetic energy of the hockey pucks during the collision, in units of Joules (J)?
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