A ranger is driving along at 14.3 m/s when a deer jumps into the road 65. m ahead of the vehicle.

Question

Physics, Im stuck tried 10 different approaches and it still doesn't work

A ranger in a national park is driving along at 14.3 m/s when a deer jumps into the road 65. m ahead of the vehicle. After a reaction time of t seconds, the ranger applies her brakes, which produce an acceleration of -2.8 m/s2. What is the maximum reaction time she can have if she is to just miss hitting the deer?

Answer 1

me assume kar speed=14.3 meter/sekond

wons yu hit the brakes, kar sloe down at a=-2.8 meter/sek^2

thus, speed=14.3 -2.8t

so take t=14.3/2.8=5.107142857142857... sekonds tu stop

distans kar go =averaej-speed*time=[(14.3)/2] *5.107142857....36.51607 meters

yu sae deer be 65 meters awae wen first see it

So yukan go 65-36.516 meters tu get tu point weer yu gotta hit the brakes

65-36.516=28.484 meters

Latest time tu hit brake=28.484 meters/(14.3 meter/sek)1.992 sekonds

make that 2 seks...ok it yu tuch deer's skin