Switch the direction of 1 fan so that two are positive and 1 is negative. Add 1 mass block to the cart. Recall the mass of each fan is 1

kg. The mass of each block is 2 kg. And the mass of the cart is 1 kg. Run the simulation and complete the table below. You can use calculations or the simulation to determine the quantities. Sum of forces on cart (N) ____________________ total mass of cart + fans + block _______________ acceleration of carts (m/s^2) ____________