An object falls freely from rest through a vertical distance off 44.0m in a time of 3.0s. What value should be quoted for the acceleration of free fall?

9.8m\sec

Explanation:

free falling neglecting the air drag so its acceleration will be the acceleration due to gravity

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.

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