Question

Object A has mass of 2 kg and object B has mass of 4 kg. Both masses are dropped from the same
height. Upon reaching the ground, (Ignoring air resistance)
a) Object A has twice the speed of object B
b) Object B has twice the speed of object A
c) Object A has four times the speed of object B
d) Object A has same speed as object B
e) Object B has four times the speed of object A

Answer 1

Answer on Question #41023, Physics, Mechanics

Object A has mass of $2\mathrm{kg}$ and object B has mass of $4\mathrm{kg}$. Both masses are dropped from the same height. Upon reaching the ground, (Ignoring air resistance)

a) Object A has twice the speed of object B

b) Object B has twice the speed of object A

c) Object A has four times the speed of object B

d) Object A has same speed as object B

e) Object B has four times the speed of object A

Solution:

Free fall as the word states is body falling freely due to the gravitational pull of the earth.

Consider a body falling freely from height $h$ with velocity $v$ for time $t$ seconds due to gravity $g$.

Free Fall Formula is

$$v = \sqrt{2gh}$$

Free fall is independent of the mass of the body. It only depends on height and time period for which body is thrown.

Thus, object A has same speed as object B

Answer.

d) Object A has same speed as object B.