Question

A motocyclist traveling at 30ms starts to apply brakes when he is 50m frm d traffic light dat has jst turned red. If he reached the traffic light, his deceleration is ?

Answer 1

Ans) 1.66 m/s^2

Please refer the attached file for explanation

Answer 2

v^2 - u^2 =2as

0- 900=2a *50

a= -9m/s^2 ( - indicates de acceleration)