Consider a car moving on a straight road with a speed of 100, m/s . distance at which car can be sto

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5.Work, Energy, Power and Collision

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Consider a car moving on a straight road with a speed of $100\, m/s$. The distance at which car can be stopped is ........ $m.$ $[{\mu _k} = 0.5]$

A

$100$

B

$400$

C

$800$

D

$1000$

(AIEEE-2005)

Solution

(d) $s = \frac{{{u^2}}}{{2\mu \;g}} = \frac{{{{(100)}^2}}}{{2 \times 0.5 \times 10}} = 1000\;m$

Standard 11

Physics

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