Question

A metal ball and tennis ball (of same size) were dropped from same height; both would reach the ground at same time. It does not matter that one ball is heavier than the other. The acceleration of an object due to gravity is independent of mass of the object. The shape of the object however is important. The sheet of paper will take more time to reach the ground than the tennis ball. This is because the effect of air friction on paper will be much greater than the air friction on tennis ball.
If we lived in a world where there was no air resistance, the A4 sheet of paper and the tennis ball would reach the ground at the same time. This happens in the outer space or in a vacuum.

Answer the following questions:

i) The value of acceleration due to gravity. a) is same on equator and poles
c) is least on equator
1
ii) The acceleration due to gravity on Earth depends upon the: 1 [
a) mass of the body b) mass of Earth
c) shape and size of body d) volume of the body
iii) Write value and SI unit of acceleration due to gravity on earth. 1 iv) Why will an A4 sheet of paper fall slower than one that is crumpled into a ball? 1

Answer 1

Answer:

i) a) is same on equator and poles

ii) b)mass of earth

iii) acceleration due to gravity on earth is 9.8m/s^2

iv)A4 sheet experience more air friction