(Solved): The same rocket sled drawn in the figure is decelerated at a rate of \( 193 \mathrm{~m} / \mathrm{ ...

The same rocket sled drawn in the figure is decelerated at a rate of \( 193 \mathrm{~m} / \mathrm{s}^{2} \). What force (in N) is necessary to produce this deceleration? Assume that the rockets are off. The mass of the system is 2100 kg. (Enter a numbe \( \mathrm{N} \)