The velocity of a particle varies directly as the product of its position and time squared. the particle has known positions s(0) = 3 and s(2) = 5. answer the following.

i am not sure if the differential equation is ds/dt=k(s+t^2)

(where s=position and t=time)

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)