A750-newton person stands in an elevator that is
accelerating downward. the upward force of the
elevator floor on the person must be
(1) equal to 0 n (3) equal to 750 n
(2) less than 750 n (4) greater than 750 n

What is the most useful equation for electric power?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec