Need help with this worksheet. Very short

How is the gravitational force related to the distance between two objects?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.