Find the kinetic energy of (a) a stone of mass 0.5 kg moving with a speed of 3 m/s, and (b) a ball of mass 0.1 kg moving with a speed of 15 m/s ? *
(a)2.12 J ; (b)15.5 J
(a)2.25 J ; (b)11.25 J
(a)2.20 J ; (b)11.30 J
(a)6.78 ; (b)12.2 J
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Explanation:
A mass of 0.5 kg moving with a speed of 1.5ms
−1
on a horizontal smooth surface, collides with a nearly weightless spring of force constant k=50Nm
−1
. The maximum compression of the spring would be
678799
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