Question

A car traveling with initial velocity of 10m/s on application of brakescomes to rest in 5 sec. Calculate the retardation?

Answer 1

$Hey \: friend \: here \: your \: answer.\\ Initial \: velocity \: of \: the \: car \: = \: 10m/s\\ Final \: velocity \: of \: the \: car \: = \: 0m/s \:( \: as \: car \: has \: applied\: the\: brakes \: )\\ Time \: taken \: = \: 5 \: seconds \\ Retardation\: = \: FINAL\: VELOCITY\: -\: INITIAL\: VELOCITY\: / \:TIME \\ Retardation\: = \: 0 \:-\: 10\: /\: 5 \\ \: = \:- 10 \:/\:5\\ \: = - 2m²/s \\ Hence\: there\: is \:retardation\: of \:2m²/s.\: Hope \:it \:helps.$