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Impulse in a Collision

CLMECH-LNQ1FP

A 950-kg blue car is travelling north at 12 m/s when it collides with a red car. After the collision, the blue car moves south at 3.0 m/s. Find the impulse that acted on the car.

A

$14,000 \space N s, \space \text {North}$

B

$8,600 \space N s, \space \text {North}$

C

$14,000 \space N s, \space \text {South}$

D

$8,600 \space N s, \space \text {South}$