Question

a body of mass 25kg has a momentum of 0.40kg m/s find its kinetic energy​

Answer 1

Explanation:

mass=25kg

momentum=0.40kg

Kinetic energy=

momentum=mass*velocity

0.40=0.025*v

0.40/0.025=velocity

=16m/s

Ek=1/2mv^2

1/20.025*16*16

3.2joule

Answer 2

Answer:

Explanation:

Given that,

 

m = 25 g = 0.025 kg

p = 0.40 kg m/s

 

Kinetic energy = P2/2m

             

                    =(0.40)2/2(0.025)

 

     = 0.16/0.05

 

     = 3.2 J