Question

The driver of a car sees an obstacle in the road and stops the car as quickly as possible. The Car stops without hitting the obstacle . State three factors that could affect the stopping. distance of the car.​

Answer 1

Factors upon which the stopping of car depends:

Let the stopping distance be d :

${v}^{2} = {u}^{2} + 2ad$

$\implies \: 2ad = {v}^{2} - {u}^{2}$

$\implies \: d = \dfrac{ {v}^{2} - {u}^{2} }{2a}$

$\implies \: d = \dfrac{ {(0)}^{2} - {u}^{2} }{2a}$

$\implies \: d = \dfrac{ - {u}^{2} }{2a}$

So , the factors will be :

• Initial velocity of the car

• Acceleration(i.e retardation) of the car

• Type of road (i.e. dry asphalt roads help in better grip as compared to wet roads).

Hope It Helps