Question

an object of mass 100-gram is vertically thrown upwards from the ground level and has a velocity of 20 metres per second at a height of 10 metre calculate initial kinetic energy at ground level taking g as 10 ​

Answer 1

Answer:

$mass = 100g \\ velocity = 20m {s}^{ - 1} \\ h = 10 \\ now \: h \: at \: ground \: level = 0 \\ g = 10m {s}^{2} \\ k.e \: at \: ground \: level = mgh \\ = 100 \times 10 \times 0 \\ = 0joule$