Question

A car is move at a speed of 18 km/h It travel and streets relardip at 1m/sec2 and come to rest find distance travelled by it?

Answer 1

Heres your answer

u=0, v= 18×5/18= 5 m sec and a = 1 m sec^2 t=?

From 1st equation of motion

v-u/t

18-0/1 =t

=18 sec..

So distance will be

s=ut + 1/2 at^2

s= (0×18)+ 1/2 ×1×(18)×(18)

s= 0+9×18×1

s= 162m

Hope it Helps....

Or simply by using (v)^2= (u)^2 +2as

324= 0+2s

324/2=s

162=s

This will be easier...