Question

a bus decreases its speed from 80 kilometre per hour to 40 km/hr in 5s find the acceleration of the bus​

Answer 1

Answer:

Explanation:

Given that  

U= initial velocity= 80 km/h = 22.2 m/s  

v= final velocity = 40 km/h = 11.1 m/s  

t= time = 5 s  

Find out  

We have to find a= acceleration = ?  

Formula  

v = u + at  

a = $\frac{v - u}{t}$  

a = $\frac{11.1 - 22.2}{5}$  

a = -11.1/5  

Therefore, acceleration a = -2.22 $m/s^2$  

The negative sign implies that the velocity is decreasing at a rate of retardation of 2.22 $m/s^2$

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Answer 2

Answer:

-2.22 $m/s^2$

Explanation: