The driver of a truck travelling with a velocity upsilon suddenly notices a brick wall in front of him at a distance d It is better for him to apply brakes or to make a circular turn without applying brakes in order to just avoid crashing into the wall ? Why ?

Explanation

In applying brakes suppose `F_(B)` is the force required to stop the truck in distance
`:. F_(B) xx d = (1)/(2) m upsilon^(2) or F_(B) = (m upsilon^(2))/(2 d ) `
In taking a turn of radius d the force required is
` F_(T) = (m upsilon^(2))/(d) = 2 F_(B) or F_(B) = (1)/(2) F_(T) `
Hence it is better to apply brakes .