Question

a car travelling at 20 kilometre per hour speed up to 56 kilometre per hour in 5 second what is acceleration​

Answer 1

Answer:

u= 20 km/h = 20*5/18= 50/9 m/s

v= 56 km/h = 56*5/18= 140/9 m/s

t= 5 s

a= v-u/t

 = 140/9-50/9÷5

 = 90/9÷5

  =90/9 *5/1

 =  10*5 m/s

 =  50 m/s^2