Question

On a frictionless horizontal air table, puck A (with mass 0.245 kg

k

g

) is moving toward puck B (with mass 0.372 kg

k

g

), which is initially at rest. After the collision, puck A has velocity 0.125 m/s

m

/

s

to the left, and puck B has velocity 0.654 m/s

m

/

s

to the right.

Part A Part complete

What was the speed vAi

v

A

i

of puck A before the collision?

View Available Hint(s)

vAi

v

A

i

=

0.868

m/s

m

/

s

SubmitPrevious Answers

Correct

If you are required to use the answer obtained for a subsequent hint or part, use your unrounded/full precision answer.

Part B

Calculate ΔK

Δ

K

, the change in the total kinetic energy of the system that occurs during the collision.

View Available Hint(s)

ΔK

Δ

K

=

0.7

J

J

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Answer 1