Question

an iron ball and feather are both falling from a height 10m.(a)what are the taken by the iron ball and feather to reach the groung .(b)what are the velocities for the iron ball and feather whe they reached the ground​

Answer 1

Answer:

When we drop a feather, an iron ball or any other matter heavier than a feather at the same time, why would they both not fall to the ground at the same time, as the mass becomes zero during free fallWhen we drop a feather, an iron ball or any other matter heavier than a feather at the same time, why would they both not fall to the ground at the same time, as the mass becomes zero during free fall

Answer 2

Answer:

$\huge\tt\red{ ~ 14.14 ms-1}$

Explanation:

$\huge\tt\red{ ==>}$ Since,kinematics equations are independent of mass of the object, according to equation (2.8) the time taken by both iron ball and feather to reach the ground are the same.

this is given by:-

$t \: = \: \sqrt{} \frac{2h}{g} = \: \sqrt{} \frac{2 \times 10}{10} = \: \sqrt{2 \: } s \: = \: 1.414 \: s$

$\huge\tt\red{==>}$ Thus, both feather and iron ball reach ground at the same time.

By following equation both iron ball and feather reach the earth with the same speed.

$\huge\mathcal\orange{It is given by:-}$

$v \: = \: \sqrt{2gh} = \: \sqrt{2 \times 10 \times 10 } \\ = \: \sqrt{200} ms - 1 \\ = \: 14.14ms - 1$

$\huge\mathcal\pink{Thank you}$