A shopper pushes a 5.32 kg grocery cart with a 12.7 N force directed at -28.7° below
horizontal. A friction force of 8.33 N
pushes back against the motion.
What is the acceleration of the cart?

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction