Question

a newton travels a distance of 12 meters in a time interval of 4 microsecondz assuming it's speed was constant then it's kinetic energy in joule ​

Answer 1

1.7*10^-27 kg = the mass of neutron (IF U MEAN NEUTRON FOR NEWTON)

K.E = 1/2 × 1.7 × 10^-27 ×(4 x 10^-6)  

     =9.2565 × 10^-19 j

we know ,  

1ev = 1.6 × 10^-19 j  

so,  

K.E = 9.2565 × 10^-19/1.6 × 10^-19 ev  

= 9.2565/1.6 ev