Question

a body of mass 25 g has a momentum of 0.40 kilogramm/s kinetic energy

Answer 1



Ms. Priya Rajput asked in Science

a body of a mass 25g has a momentum of 0.40kg m/s. find its kinetic energy

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Selvarasu answered this
6 helpful votes in Science, Class X

mass = 25 g = 0.025 kg

momentum = 0.4 kgm/s
to find : Kinetic Energy
​Solution : mass * velocity = momentum
​                0.025 kg * velocity = 0.4 kgm/s
                velocity = [0.4/ 0.025] m/s
                velocity = 16 m/s
Kinetic Energy = 1/2mv​2
            Ek​ = [1/2 * 0.025 * 16 * 16] J
            E​k = 3.2 J

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Komal Singh answered this
1082 helpful votes in Science, Class XII-Commerce

p= mv

v= p/m                v= 0.40/25             v= 0.016 m/sec.

K.E.=1/2 m*v*v

= 1/2 *25*0.016*0.016

= 0.0032 joule

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Pulkit_bansal answered this
279 helpful votes in Science, Class XI-Science

Mass = 25 g = 0.025 kg

Velocity = 0.40 metre/ second


= 1/2 X 0.025 X 0.40 X 0.40 = 0.002 joule

Hope it helps !! Cheers !!