65-kg ice hockey goalie, originally at rest, catches a 0.145-kg hockey puck slapped at him at a velocity of 35 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is eflected back in the direction from which it came. A sketch from the animation from Part 1 should look like this. Note the subscripts i and f indicate velocities before and after the collision, respectively. The subscripts p and g represent the puck and the goalie, respectively. Before collision (m) After Collision Vpf (mp) O The goalie O The puck O The goalie and the puck m mVgi 0 Vgf need Consider: How many knowns are there and how many unknowns? How many equations do you to solve for the unknowns? Can you identify the equations? (a) What would you consider a system in this collision? (4)
65-kg ice hockey goalie, originally at rest, catches a 0.145-kg hockey puck slapped at him at a velocity of 35 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is eflected back in the direction from which it came. A sketch from the animation from Part 1 should look like this. Note the subscripts i and f indicate velocities before and after the collision, respectively. The subscripts p and g represent the puck and the goalie, respectively. Before collision (m) After Collision Vpf (mp) O The goalie O The puck O The goalie and the puck m mVgi 0 Vgf need Consider: How many knowns are there and how many unknowns? How many equations do you to solve for the unknowns? Can you identify the equations? (a) What would you consider a system in this collision? (4)
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Transcribed Image Text:se answer the following question(s):
A 65-kg ice hockey goalie, originally at rest, catches a 0.145-kg hockey puck slapped at him at a
velocity of 35 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is
reflected back in the direction from which it came.
A sketch from the animation from Part 1 should look like this. Note the subscripts i and f indicate
velocities before and after the collision, respectively. The subscripts p and g represent the puck and
the goalie, respectively.
m₂ Vgi-0
E
16
O The goalie
O The puck
O The goalie and the puck
6
Consider: How many knowns are there and how many unknowns? How many equations do you need
to solve for the unknowns? Can you identify the equations?
(a) What would you consider a system in this collision?
Y
Before collision
&
After Collision Vpf
7
hp
U
4+
*
8
Vpi
mp
19 144
|
mg
9
f10
► 11
O
O
?
Ā
P
54°F ^(40)
12
{
+
[
insert
个
12:40 PM
10/28/2022
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Transcribed Image Text:Paction=activityBranding&COURSEID=3377&SECTIONID=170745
IDI
R
O
fs
(b) In an elastic collision (correctly assign True or False to all statements),
Momentum is conserved but not the internal energy.
%
5
O True
O False
Momentum is not conserved but the internal energy is conserved.
T
O True
O False
Both momentum and internal energy are conserved.
O True
O False
The initial relative velocities of the two objects is equal and opposite to the final relative velocities
of the two objects.
O True
6
Y
4-
&
7
hp
18+
U
*
00
fg
1
f10
► 11
о
f11
?
ADI
P
54°F
+
SI
11
insert
M
↑
L
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