Question

A car moving along a straight highway with speed of $126Kmh^{-1}$ is brought to a stop with in a distance of 200m. what is the retardation of the car

• A. $3.06ms^{-2}$
• B. $4ms^{-2}$
• C. $5.06ms^{2}$
• D. $6ms^{-2}$

Answer 1

Answer: (A)

$3.06ms^{-2}$

Answer 2

$\nu^2 - u^2 = 2as$