Heat and thermal energy are 1 and the same things and temperature is the degree of measure of heat.Kinetic energy of a particle(in terms of atoms and molecules) is directly proportional to the temperature in kelvin.

K.E = 1/2mv2

K.E ( X T

where 1/2 and mass m of a body is constant so it depends on v only.And (X is proportionality sign.

K.E = 1/2mv2

K.E ( X T

where 1/2 and mass m of a body is constant so it depends on v only.And (X is proportionality sign.