QJEEM19Ph1954: JEE Main 2019 Physics - Class 11 JEEM19Ph1954 Solution: A particle which is experiencing a force, given by F → = 3 i ^…

Question

Verified Solution • 2025–26 Session moderate

A particle which is experiencing a force, given by

\vec{F} = 3 \hat{i} - 12 \hat{j},

undergoes a displacement of

\vec{d} = 4 \vec{i}

particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement ?

Accepted Answer

Work done =

\vec{F} \cdot \vec{d}

=

12 J

work energy theorem

w_net

=

Δ

K.E.

12

=

K_f

-

3

K_f = 15 J

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