Question

. A car takes 6 hours to reach a distination by travelling at the speed of 50 km per hour. How long will
a take when the car travels at the speed of 75 km per hour ?​

Answer 1

Step-by-step explanation:

Case i :

u=0

v=50 m/s

t=6 hr

a = ?

v= u+at

50 = 0+6a

a = 8.3 m/s^2

Case ii :

u=0

v=75 m/s

a= 8.3 [ we found it in case 1 ]

t=?

v=u+at

75 = 0 + 8.3 t

t = 9 hr