Question

8. A body of mass 60 kg is moving with a speed
50 m s-1. Find its kinetic energy.​

Answer 1

Answer:

kinetic energy = 0.5mv²

                         = 0.5×60×50

        ∴ K.E         = 1500 J

 Hope it helps :)

Answer 2

GivEn:-

• Mass of body (m) = 60kg

• Speed at which body is moving (v) = 50 m/sec

To find:-

• Kinetic Energy

SoluTion:-

$\dag\;\bf {\underline{\underline{\red{According\;to\; question:-}}}}$

• m = 60 kg

• v = 50 m/s

$\dag\;{\underline{\boxed{\bf{\blue{Kinetic\;Energy = \dfrac{1}{2} m{v}^{2}}}}}}$

$:\implies\sf K.E. = \dfrac{1}{ \cancel{2}} \times \cancel{60} \times 50 \times 50$

$:\implies\sf K.E. = 30 \times 50 \times 50$

$:\implies\sf K.E. = 30 \times 50 \times 50$

$:\implies{\underline{\boxed{\bf{\pink{K.E. = 75,000\;Joule}}}}}$ ★

$\dag$ Hence, The kinetic energy of a body

having mass 60 kg moving with speed 50 m/s is 75,000 Joule.

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