Question

16. A car is moving in a straight line with speed
18 km h-1. It is stopped in 5 s by applying the brakes.
Find : (i) the speed of car in ms-, (ii) the retardation
and (iii) the speed of car after 2 s of applying the
brakes. Ans.(i) 5 m s-, (ii) 1 m -2, (iii) 3 ms!

please help me with the procedure...​

Answer 1

Hey!!!!!,

This is your answer.

u = 18km/hr

=18 × 5/18

=5m/sec Ans_______

t=5sec

v=0m/sec

therefore, a =v-u/t

a=0-5/5

a=-1m/sec2

or Retardation = 1m/sec2 AnS_______

a=1m/sec2

t=2m/sec

v=0m/sec

therefore, a=v-u /t

-1=0-u/2

-1=-u/2

therefore, speed =2m/sec Ans_______

Hope this helps you!!!☺️☺️☺️

Answer 2

Answer:

I hope this helps you

Answer is (iii) 3 ms!

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