Bus Deceleration Calculation: From 72 km/h to 36 km/h in 5 Seconds

To calculate the acceleration, we can use the formula:

Acceleration = (final velocity - initial velocity) / time

Given: Initial velocity (u) = 72 km/h Final velocity (v) = 36 km/h Time (t) = 5 seconds

Converting the velocities to m/s: u = 72 km/h * (1000 m/1 km) * (1 h/3600 s) = 20 m/s v = 36 km/h * (1000 m/1 km) * (1 h/3600 s) = 10 m/s

Now we can substitute these values into the formula:

Acceleration = (10 m/s - 20 m/s) / 5 s Acceleration = -10 m/s / 5 s Acceleration = -2 m/sﾲ

Therefore, the acceleration of the bus is -2 m/sﾲ. The negative sign indicates that the bus is decelerating or slowing down.