Can you check my physics homework.

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.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Ascientific blank must be testable and capable of being proven false?