Question

CAB (Covid Appropriate Behavior) के विषय में सामान्य जनता को जागरूक करते हुऐ सम्पादक को अपने सुभावो से अवगत कराते हुए पत्र लिखिए।​

Answer 1

Explanation:

let the downward velocity be V

1

and upward velocity be

V

2

now

V

1

=

2gh

1

=

2×9.8×2

=

4×9.8

=

2

9.8

momentum before collision =mV

1

=

100×

10

−3

×

2

9.8

=

0.626

s

kgm

after collision

V

2

=

2gh

2

=

2×9.8×1.5

=

3×9.8

momentum after collision = −mV

2

=

−100×

10

−3

3×9.8

=

−0.542

s

kgm

direction is reverse therefore negative sign assigned

△P= P

f

− P

i

= -0.542-0.626 = -1.168

F=

△ t

△ P

= 1.168× 10

8

N

Answer 2

$❥Answer᭄❥$