Which of the following types of reactions would decrease the entropy within a cell?

digestion
hydrolysis
respiration
dehydration reactions
catabolism

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?