Question

a man of 60kg gains 1000 cal of heat by eating 5 mangoes his efficiency is28% to what height height he can jump by using this energy

Answer 1

Answer:

mass, m=60 kg

energy gained=1000 cal

we know that,1 cal=4.2 J

1000 cal=4200 J

So, energy gained=4200 J

Efficiency=28%

Energy output=mgh=28% of 4200 J

28/100×4200=60×9.8×h

h=28×42/60×9.8h=2 m