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AP® Physics C: Mechanics

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Children Fighting Over a Toy Cart

APPHMC-C4TGYY

Three children are fighting over a toy cart. Child A pushes from the +y direction towards the -y direction with $40 N$ of force, while Child B pushes from the -x direction towards the +x direction with $30 N$ of force.

If the toy cart is not moving, how much force (in magnitude) must Child C be pushing the cart with?

A

$10 \ N$

B

$20 \ N$

C

$30 \ N$

D

$40 \ N$

E

$50 \ N$