Question

A car accelerating uniformly at the rate of 4m/s2, increases its speed from
72km/hr to 108km/hr. How much time does it take to do this?

Answer 1

Answer:

the ans is 84.375

Step-by-step explanation:

i have attached as pictures

frist change 72 km/hr and 108 km /hr into m/s

u will get

135m/s =72km/hr and

202.5m/s=108km/hr

t=v-u/a

t=135-202.5/4m/s

=84.375