Question

A constant force of 5 newton is applied on a block of mass 20 kg for a distance of 2.0 m the kinetic energy acquired by the block is

Answer 1

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Answer 2

According to the Question

Acceleration

${\implies a = \dfrac{5}{20}}$

${\implies a = \dfrac{1}{4}ms_{-2}}$

${\implies v = \sqrt{2as}}$

${\implies v = \sqrt{\dfrac{2\times 2}{4}}}$

v = 1 m/s

${\implies KE = \dfrac{1}{2}\times mv^{2}}$

${\implies KE = \dfrac{1}{2}\times 20\times 1^{2}}$

= 10 J