Impact lasts for ros face aceeale va dona dere to grauite rom
À hammer weighing soon falls freely
on a nail from a Height of 2.20m
the impact lasts for you pre take
acceleration due to gravity come​

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.