A car screeches to a halt at a stop sign. The car has a mass of 2,000 kg and the brakes had to apply a force of 5,000 N to slow the car down. What was the rate at which the car decelerated? (Hint: Remember the difference between acceleration and deceleration when writing your final answer.) 2.5 m/s^2
-2.5 m/s^2
0.5 m/s^2
0.5 N

This is science but I can't find that in the subjects