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Motion in A Straight Line question

2023 · 1 Feb · Shift 2 · Q72

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JEE Main
Physics
Motion in A Straight Line
2023 · 1 Feb · Shift 2 · Q72

Motion in A Straight Line question

2023 · 1 Feb · Shift 2 · Q72

JEE MainPhysicsMotion in A Straight LineNumerical+4 / −1

For a train engine moving with speed of

20 \mathrm{~ms}^{-1}

, the driver must apply brakes at a distance of 500

\mathrm{m}

before the station for the train to come to rest at the station. If the brakes were applied at half of this distance, the train engine would cross the station with speed

\sqrt{x} \mathrm{~ms}^{-1}

. The value of

x

is

\underline{\hspace{2cm}}

. (Assuming same retardation is produced by brakes)

Numerical answer

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