A force of 5n is applied on 20kg mass at rest. the work done in third second is
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acceleration=5/20
=1/4 m/s²
displacement=½a t²
=½*1/4*9
9/8 m
w= f.s
=5*9/8
=45/8 jul or n/m²
=1/4 m/s²
displacement=½a t²
=½*1/4*9
9/8 m
w= f.s
=5*9/8
=45/8 jul or n/m²
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