Acar traveling at a speed of 24 m/s comes to a stop at a red light. how much time will it take for the car to stop if its acceleration is –8.0 m/s2?

3 seconds

In this case;

Final velocity = 0 m/s (because the car is going to rest by stopping)

Initial velocity = 24 m/s

Acceleration = -8.0 m/s²

Thus; - 8.0 m/s² = (0-24 m/s)/ t

           time = (-24 m/s)/-8.0 m/s²

                    = 3 seconds

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle