A lorry and a car moving with the same K.E. are brought to rest b… - Vidyadip

MCQ

A lorry and a car moving with the same $K.E.$ are brought to rest by applying the same retarding force, then

A
Lorry will come to rest in a shorter distance
B
Car will come to rest in a shorter distance
✓
Both come to rest in a same distance
D
None of the above

✓

Answer

Correct option: C.

Both come to rest in a same distance

c
Workdone by retarding force $=$ kinetic energy of vehicle

$F \times S = KE\,\, ;\,\, S = \frac {KE}{F}$

$\therefore $ Lorry and Car have same kinetic energy and retarding force on them are also same so, $S$ will be same for both

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