Aneutron of mass 1.7x10^-27 kg travels a distance of 12m in a time interval of 3.6x10^-4 sec assuming speed constant it's kinetic energy is? ?

9.4 × 10⁻¹⁹ J. (2 sig. fig).

The kinetic energy of an object depends on its mass and its speed. Mass is given for this neutron. However, the speed of the neutron needs to be found.

What's the speed of this neutron?

(3 sig. fig. Speed is an intermediate quantity. Include at least one more sig. fig. for the value of kinetic energy to be accurate to 2 sig. fig.)

What's the kinetic energy of this neutron?

,

where

.

(2 sig. fig as in mass, distance travelled, and time).