A particle of mass 100 g is thrown vertically upwards with a speed of $5$ m/s. The work done by the force of gravity during the time the particle goes up is (1) 0.5 J (2) $-0.5$ J (3) $-1.25$ J (4) 1.25 J
A particle of mass 100 g is thrown vertically upwards with a speed of $5$ m/s. The work done by the force of gravity during the time the particle goes up is\\
(1) 0.5 J\\
(2) $-0.5$ J\\
(3) $-1.25$ J\\
(4) 1.25 J