Question

a car travelling at 20 kilometre per hour speed up to 60 km per hour in 6 seconds calculate the acceleration produced

Answer 1

Answer:

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

v= 60 km/h = 60*5/18= 50/3 m/s

t= 6 s

a= v-u/t

 = 50/3-50/9÷6  

 = 100/9÷6

 = 100/9×1/6

 =  50/27 m/s^2

Step-by-step explanation:

Answer 2

Solution:
Initial velocity = 20 km/hr
= (20 × 1000)/(60×60) = 5.55 m/s

Final velocity = 60 km/hr
= (60 × 1000)/(60 × 60) = 16.67 m/s

Time = 6 sec

Since, acceleration = (Final velocity - initial velocity) / time
Therefore, acceleration = (16.67 - 5.55)/6
= 11.12 / 6
= 1.85 m/s^2

Therefore, acceleration produced by the car is 1.85 m/s^2.