A cat runs with 5m/s and has 55J. How much mass does the cat have?

Question

I need to show work or else i do not get credit

Answer 1

SO the definition of work is given by 

 

 

Kinetic Energy = 0.5 mv^2

 

             55 J         =   0.5 m (25)

 

m =  55(2) / 25

 

=   110 / 25

 

=   22 / 5

 

= 4.4 kg

 

so your cat has a mass of 4.4 kg