A 107.0 N grocery cart is pushed 14.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is the grocery cart's final speed?

Answer 1

Duplicate post. Use conservationn of energy. The mass of the cart is
M = W/g = 107/9.8 kg

I showed you the formula to use in your other post of the same question