Question

একটি গ্ৰামে 100জন মহিলা অন্তত একটি ভাষা জানে।45 জন জানে হিন্দি আর 75জন জানে পাঞ্জাবি। তাহলে কতজন দুটি ভাষাতে দক্ষ​

Answer 1

language smj nhi aaya xD

Solution :-

As the ball starts from rest. Then, initial velocity is 0 m/s.

We know that

\sf h = ut + \dfrac{1}{2}gt^2h=ut+

2

1

gt

2

Here,

h = height

u = initial velocity

t = time

g = acceleration due to gravity

◼ I n C a s e 1

Time = T second

u = 0 m/s (As it starts from rest)

g = 10 m/s²

\sf h_{1} = 0\times T + \dfrac{1}{2}\times 10\times T^2h

1

=0×T+

2

1

×10×T

2

\sf h_{1} = 0 + 5\times T^2h

1

=0+5×T

2

\sf h_{1} = 5T^2h

1

=5T

2

◼ I n C a s e 2

Time = T/3 second

u = 0 m/s

g = 10 m/s²