Hello
1) Weight = mass × gravity
W = m × g
i know g = 10N/kg and m = 250 g = 0,250kg
so Weight = 10N/Kg × 0,250kg
Weight = 2,50 N
The Weight of a body whose mass is 250g is 2,50N
2) Weight = mass × gravity
W = m × g
i know g = 10N/kg and m = 180 kg
so Weight = 10N/Kg × 180kg
Weight = 1800 N
the weight of abull of mass 180kg is 1800 N
Good day!