A blue box and green box are sitting on a table not moving. A student exerts the same force on both boxes and observes how long it takes each box to travel 2 ft. Time to Travel 2 feet

Blue Box

7 seconds

Green Box

15 seconds

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.