1.

A particle of mass 100g is thrown vertically upwards with speed of 5m/s. the work done by the force of gravity during the time the particle goes up is ​

Answer»

1.25 JExplanation: Work done = Force × displacementForce acting here is GRAVITATIONAL so, F = mgDisplacement of the object is s = u^2 / 2g W = m × G × u^2 / 2g = m × u^2 / 2 = 5 X 10^-3 kg x 5 × 5 / 2W = 1.25 JOULES



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