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Find the kinetic energy of a cricket ball of mass 500g moving at a spedof 30cm/s. Find kE in si unit. |
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Answer» e KINETIC energy of a ball of mass 500g moving with a velocity of 8m/s.Answer:The kinetic energy of ball is 16000 J.Explanation:Given:Mass of ball or m = 500 gVelocity or v = 8 m/sTo find:Kinetic energy = ?Solution:Kinetic energy = \FRAC{1}{2} m {v}^{2} 21 mv 2 = \frac{1}{2} \times 500 \times {8}^{2} = 21 ×500×8 2 = \frac{1}{2} \times 500 \times 64= 21 ×500×64= 250 \times 64=250×64= 16000 JTherefore, The kinetic energy of the ball is 16000 J.Kinetic Energy:The energy of a body DUE to its motion is called its kinetic energy.It depends on the mass of the body and its speed |
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