If a 15 kg rock falls from a height of 10 m and lands on a guy about 2.5 s later, how much power did it hit him with?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Can someone me with this? i’m not sure what to put for my equations.