Question

calculate the kinetic energy of a 2kg snow ball thrown through the air at 5m/s.


pls answer with complete steps.​

Answer 1

Answer:

Given,

Mass of the moving body m

1

=2kg

Velocity of the body v

1

=6m/s,

Mass of another body m

2

=2kg

Velocity of the another body v

2

=0m/s

As per the conservation of the momentum,

Common velocity, v=

m

1

+m

2

m

1

v

1

+m

2

v

2

=

2+2

2×0+2×0

=3m/s

Initial kinetic energy (E

1

)

=

2

1

m

1

v

1

2

+

2

1

m

2

v

2

2

=

2

1

×2×(6)

2

=36J

Energy of the body, after collision is

=

2

1

(m

1

+m

2

)V

2

=

2

1

(2+2)(3)

2

=18J

So, As per the conservation of the energy,

"Energy neither can be produce nor can be destroy,it transform from one form to another form."

So, Energy transformed to the heat

∴ Heat evolved =(36−18)J=18J

Explanation:

hope it helps you