Question

whai is its answer?????​

Answer 1

Distance travell by car during reaction time = S=ut +1/2at^2

= 20×0.5 -0 =10m

Time taken to stop car after applying break = 20- 5t =0

t = 4 sec ( V= u+at)

distance travel during this time = 20×4-1/2×5×16= 40m

(S=ut +1/2at^2)

total distance travel = 40+10=50m