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A van and a car are moving with the same kinetic energy. They are brought to rest by applying brakes which provide equal force, implying that

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both will cover an equal distance

the truck will cover a greater distance

the car will cover a greater distance

none of the above

answer is A.

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Detailed Solution

A van and a car are moving with the same kinetic energy. They are brought to rest by applying some brakes, which provide equal force, implying that both will cover an equal distance.
Given:

Kinetic Energy = same

Final velocity

V = 0 m / s

Using the work done formula

W = Force \times distance

Here the work done equals K.E.
∴

. E . = F \times S

, where

S

is the distance travelled

S = K . E . / F

It is given that K.E. and Force are the same for both the van and car.
This implies both the car and the van will cover an equal distance.

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