A bus initially moving at 20 m/s with an acceleration of -4m/s² for 5 seconds. What is the displacement AND final velocity?

50m; 0m/s.

Explanation:

Given the following data;

Initial velocity = 20m/s

Acceleration, a = - 4m/s²

Time, t = 5secs

To find the displacement, we would use the second equation of motion;

Substituting into the equation, we have;

S = 50m

Next, to find the final velocity, we would use the third equation of motion;

Where;

Substituting into the equation, we have;

V = 0m/s

Therefore, the displacement of the bus is 50m and its final velocity is 0m/s.