A block moving horizontally on a smooth surface with a speed of 40 ms⁻¹ splits into two equal parts. If one of the parts moves at 60 ms⁻¹ in the same direction, then the fractional change in the kinetic energy will be x: 4 where x = _ _ _ _ _ _.

Work, Energy and Power: JEE Main 2021 Physics question

JEE Main 2021 · 31 Aug, Morning shift · Q71

JEE Main 202131 Aug, Morning shiftPhysicsMediumWork, Energy and Power70× since 2002

A block moving horizontally on a smooth surface with a speed of 40 ms^

-

1 splits into two equal parts. If one of the parts moves at 60 ms^

-

1 in the same direction, then the fractional change in the kinetic energy will be x : 4 where x = ___________.

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2021 Work, Energy and Power Question with Answer (31 Aug Morning shift, Q71) | JEE Arc

JEE Main 2021 · 31 Aug, Morning shift · Q71

JEE Main 202131 Aug, Morning shiftPhysicsMediumWork, Energy and Power70× since 2002

A block moving horizontally on a smooth surface with a speed of 40 ms^

-

1 splits into two equal parts. If one of the parts moves at 60 ms^

-

1 in the same direction, then the fractional change in the kinetic energy will be x : 4 where x = ___________.

Your answerType your answer. Integers and decimals are accepted.