If P M L ~ T R Q; find QR

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.