1. Block X of mass m is at rest at the top of a ramp, and the block's center of mass is at a height H(1) above the ground. Block X is then released from rest, and it slides down the ramp and collides with block Y of mass m, which is initially at rest and has its center of mass at a height h above the ground. At the moment before the collision, block X has a speed of v. After the collision, block Y travels such that it lands at point P. Consider the block X-block Y system from the moment in time that block X is released from rest to the moment immediately after block X collides with block Y. Which of the following claims best describes the system? Treat friction and air resistance as negligible. * Block X mo Block Y mo H, O (A) The system is open since the total momentum of the system changes. (B) The system is open since the total KE of the system changes. O (C) The system is closed since the total momentum of the system remains consta O (D) The system is closed since the total KE of the system remains constant.
1. Block X of mass m is at rest at the top of a ramp, and the block's center of mass is at a height H(1) above the ground. Block X is then released from rest, and it slides down the ramp and collides with block Y of mass m, which is initially at rest and has its center of mass at a height h above the ground. At the moment before the collision, block X has a speed of v. After the collision, block Y travels such that it lands at point P. Consider the block X-block Y system from the moment in time that block X is released from rest to the moment immediately after block X collides with block Y. Which of the following claims best describes the system? Treat friction and air resistance as negligible. * Block X mo Block Y mo H, O (A) The system is open since the total momentum of the system changes. (B) The system is open since the total KE of the system changes. O (C) The system is closed since the total momentum of the system remains consta O (D) The system is closed since the total KE of the system remains constant.
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Could you please explain this momentum question? texbook page 155, qn 8
Transcribed Image Text:1. Block X of mass m is at rest at the top of a ramp, and the block's center
of mass is at a height H(1) above the ground. Block X is then released from
rest, and it slides down the ramp and collides with block Y of mass m,
which is initially at rest and has its center of mass at a height h above the
ground. At the moment before the collision, block X has a speed of v. After
the collision, block Y travels such that it lands at point P. Consider the block
X-block Y system from the moment in time that block X is released from
rest to the moment immediately after block X collides with block Y. Which
of the following claims best describes the system? Treat friction and air
resistance as negligible. *
Block X
mo
Block Y
mo
H,
O (A) The system is open since the total momentum of the system changes.
(B) The system is open since the total KE of the system changes.
O (C) The system is closed since the total momentum of the system remains consta
O (D) The system is closed since the total KE of the system remains constant.
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